What is the meaning of death rate?

Correct answer: Number of deaths per thousand population in a year

Direct answer: A, the number of deaths per thousand population in a year. Death rate is a demographic measure that relates deaths during one year to the population being studied. The per-thousand basis makes comparison easier between places with different population sizes. To understand it step by step, count deaths in the year, compare them with the population, and express the result for every 1,000 people. Option A is correct because it contains all these parts. Option B is wrong because trees are part of the natural environment, not a measure of human mortality. Option C is wrong because roads measure infrastructure, not deaths. Option D is wrong because schools are institutions and their number does not define death rate. A simple form is: death rate = deaths in one year ÷ population × 1,000. Memory cue: death rate is deaths per thousand people per year.