Question

which of the following is a way to conserve water? *
take longer showers
use less efficient irrigation methods (such as overhead sprinkler systems)
only use the dishwasher and clothes washer when they are full.
run tap water when brushing your teeth

Explanation:

Taking longer showers, using less - efficient irrigation, and running tap water while brushing teeth waste water. Using the dishwasher and clothes - washer only when full reduces unnecessary water usage.

Answer:

Only use the dishwasher and clothes washer when they are full.