The correct options are
A Conserving electricity.
B Preventing wastage of water.
D Paying taxes on time.
The constitution of India lays down certain rights and duties for the citizens of India. These rights and duties are meant to help citizens lead better lives in a responsible manner.
Citizens have the duty to preserve the sovereignty, unity and integrity of the country. Apart from these, citizens also have the duty to conserve electricity, to save water, and to pay taxes on time.