The correct options are
A Use buckets for taking a bath.
C Repair leakage of taps.
D Collect and store rainwater.
∙ Only 3% of the Earth's water is in usable form, while 97.5% of the Earth's water is saltwater.
∙ It is therefore very essential to save water, to save lives.
∙ Everyone should use water judiciously by adopting methods like using buckets for bathing instead of showers, repairing leaking taps immediately, collecting and storing rainwater for future use etc.