Using a refill bottle promotes which habit?

Correct answer: Reusing bottles and reducing plastic bottle consumption

The governing concept is the 3R approach, particularly Reduce and Reuse. A refill bottle is designed to be filled and used many times, so a person does not need to purchase a new single-use plastic bottle for every drink. This can reduce the amount of plastic entering the waste stream and conserve materials used in manufacturing and transport. Option B is correct because it names both the repeated-use habit and the reduction in disposable bottle consumption. Option A describes the opposite behaviour. Options C and D concern water wastage and waste segregation; they are not the direct habit promoted by using a refill bottle. The bottle should still be cleaned and maintained safely.