A clean campus is an example of what?

Correct answer: Responsible environmental behaviour

The governing concept is responsible environmental behaviour. Keeping a campus clean involves using bins correctly, avoiding litter, segregating waste where facilities exist, and helping maintain shared spaces. These actions protect health, improve the surroundings and show that students and staff accept collective responsibility for the environment. Option B is correct because a clean campus reflects responsible care rather than a single accidental act. Option A describes littering, which creates an unhygienic environment. Option C concerns unnecessary water use and is not implied by cleanliness. Option D is a separate form of pollution involving excessive or disturbing sound. A clean campus should also be maintained through regular action, not merely prepared for inspection or a special event.