Introduction

Dietetics is the practical application of nutrition science. It involves assessing nutritional needs, planning suitable diets, counselling individuals, and adapting food choices for health, disease, age, lifestyle, or medical treatment. Therefore, diet planning and nutrition services—not clothing, decoration, or sports equipment—are its central concerns.

Nutritional assessment is a systematic process used to determine a person's nutrition status. It considers information such as dietary intake, body measurements, clinical signs and, when required, biochemical findings. It helps identify nutrient deficiencies, excesses or risks so that suitable dietary advice and care can be planned.

Anthropometric assessment uses measurements of the human body to evaluate growth, nutritional status and health risk. Height and weight are basic anthropometric measurements and can be used with age and other values to assess growth or calculate indicators such as body mass index. Therefore, option C is correct.

Protein provides amino acids needed to build, maintain and repair body tissues. It supports growth during childhood and adolescence, helps repair damaged cells, and contributes to enzymes, hormones, antibodies and other functional substances. Although protein can provide energy when necessary, growth and tissue repair are major functions, making option A correct.

Vitamins and minerals are micronutrients required in small amounts, but they are essential for regulating body processes, supporting immunity, maintaining bones and blood, and preventing deficiency diseases. They do not primarily supply energy like carbohydrates and fats. In school nutrition classification, they are therefore called protective nutrients, so B is correct.

Malnutrition is an abnormal nutritional condition caused by an inadequate, excessive or imbalanced intake of energy or nutrients. It includes undernutrition, micronutrient deficiencies and overnutrition, which may lead to problems such as poor growth, anaemia, obesity or illness. Therefore, option C gives the complete meaning.

Undernutrition occurs when the body receives less energy or fewer essential nutrients than it needs for maintenance, growth and normal functioning. It may result from inadequate food intake, poor absorption or increased requirements during illness. The prefix “under” indicates insufficiency, so option D is correct.

Overnutrition occurs when intake of energy or one or more nutrients regularly exceeds the body’s requirements. Persistent excess energy may contribute to overweight and obesity, while excessive amounts of particular nutrients can also be harmful. The term “over” means excess, so option A is the correct definition.

A diet history collects information about a person’s usual food intake and eating behaviour. It may ask what foods and drinks are consumed, their quantities, meal timing, preparation methods, snacks, supplements, allergies and food-related symptoms. This information helps assess nutrient intake and plan suitable advice, making option C correct.

Biochemical assessment measures substances and indicators in body samples to understand nutritional and health status. Common examples include blood tests for haemoglobin, glucose, proteins, electrolytes, vitamins or lipids, and urine tests for substances such as protein or glucose. Therefore, option D is correct; the other options are unrelated household or physical activities.

Diet counselling means providing a patient with accurate, practical, and individualized advice about food and eating habits. It may include guidance about suitable foods, portion size, meal timing, food restrictions, and methods of improving nutritional intake. Therefore, option B is correct because counselling is food-related education and advice, not a household, tailoring, or travel service.

Economic status is considered because a diet plan must be affordable, realistic, and sustainable for the patient and family. Nutritious meals can often be prepared using locally available and reasonably priced foods, so high cost is not a measure of quality. Option D is correct because effective nutrition advice must be practical and accessible.

Diet instructions should be communicated in simple, clear, respectful, and understandable language that matches the patient’s age, education, language background, and health condition. The patient should be able to explain the advice back or demonstrate how it will be followed. Unnecessary technical terms, frightening language, or unexplained foreign words can reduce understanding and adherence. Therefore, simple and understandable language is the most appropriate choice.

Clinical nutrition and dietetics explain how food and nutrients influence health, disease management, recovery, and overall patient care. Students learn to relate dietary needs to a person’s medical condition and to understand why diets may be modified. Therefore, option A correctly describes the subject.

A clinical nutritionist studies the patient’s health condition, nutritional needs, medical restrictions, and eating habits, then helps plan suitable food and feeding advice. The nutritionist works with the healthcare team but does not perform surgery or manufacture medicines. Therefore, giving appropriate diet advice is the correct answer.

A normal or regular hospital diet may be given when a patient can eat normally and has no special medical restriction requiring a modified diet. Difficulty swallowing may require altered texture, a liquid diet may be prescribed for a specific condition, and tube feeding is used when oral intake is unsuitable. Thus, option B is correct.

Diet counselling is an educational and motivational process. It helps a patient understand suitable food choices, meal patterns, portion control, hygiene and other behaviours related to the medical condition. The aim is to support practical adherence and improve health, not to create fear, hide food or impose unnecessary fasting. Therefore, option B is correct.

Safety in diet therapy means that the prescribed food is appropriate for the patient's disease, treatment, allergies, swallowing ability, tolerance, and nutritional needs. It should not worsen symptoms, interact harmfully with treatment, or create an avoidable infection risk. The temperature or sugar content alone does not define safety. Thus, option A correctly expresses patient-centred dietary safety.

Diet counselling is effective only when the patient understands the advice and can apply it in daily life. Simple, respectful, culturally appropriate language allows the professional to explain portions, meal timing, substitutions, precautions, and follow-up clearly. Technical terms may be used when necessary, but they should be explained in familiar words. Therefore, option A is the best answer.

Food temperature is an important part of planning and serving a patient’s diet because it affects comfort, tolerance, digestion, and safety. Extremely hot food may burn the mouth or throat, while very cold food may cause discomfort or sensitivity. The suitable temperature depends on the patient’s illness, age, treatment, and personal tolerance. Therefore, option D is correct: temperature is considered to protect the patient and make eating more comfortable.

Portion control means deciding and serving an appropriate quantity of each food or meal. In patient care, the portion may be adjusted according to energy needs, medical condition, appetite, age, treatment, and prescribed diet. It does not mean wasting food or changing its name. Correct portions help prevent overeating or inadequate intake and make the diet plan practical to follow. Therefore, option A is correct.

Goals give a nutrition care plan a clear direction by stating the nutritional change expected for the patient and, when appropriate, the period in which it should occur. They help the professional choose suitable interventions, communicate priorities, and compare later findings with the intended outcome. Goals also make evaluation more objective. They are not made to confuse the patient or decorate the plan. Therefore, option C is correct.

Written diet instructions provide a clear reference that the patient and family can consult after leaving the clinic or hospital. They can record foods to include or avoid, portion sizes, meal timing, preparation advice, and special precautions. This reduces dependence on memory, limits misunderstanding, and supports consistent adherence at home. Written instructions are therefore useful for remembering and correctly following the prescribed diet. Option D is correct.

Family members often purchase food, prepare meals, remind the patient about timing, and provide support during recovery. When they understand the diet’s purpose, permitted foods, restrictions, portions, and preparation methods, they can help maintain the plan accurately at home. Family education can also identify difficulties early and improve continuity of care. It is not related to changing the house or stopping games. Therefore, option A is correct.

Medication information is relevant because some medicines interact with foods or nutrients, alter appetite or digestion, require administration with or without food, or affect nutrient absorption and metabolism. Knowing the medicines helps the nutrition professional avoid unsuitable combinations and coordinate meal timing with treatment instructions. The diet must still be individualized and medically supervised. Therefore, option B is correct because food–medicine relationships can influence safe diet planning.