A jewellery shop starts giving computer-based weight and billing of ornaments instantly. This is an example of what?

Correct answer: Computerised measurement and billing

The direct answer is B: computerised measurement and billing. A computer is a technological tool used to calculate weight, record information, prepare a bill, and give the customer the result quickly. The sequence is: the ornament is weighed, the computer stores or processes the weight and price, and the billing system produces the bill. Thus this is a technological improvement in shop service. Option A, family custom, concerns practices followed by relatives or a family and does not explain computer use. Option B is correct because it names exactly what the shop has introduced. Option C, political rule, is a law or government direction, not a weighing and billing method. Option D, social class, describes groups of people based on social or economic position and has no connection with the computerized process. Remember: when a business uses digital machines to measure, calculate, store, or bill, it is an example of technology. Do not confuse the product being sold, jewellery, with the technology used to sell it.