washing all clothes in warm water turning off the lights when not in use letting the water run when brushing teeth using bags made of plastic instead of paper
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which is a good practice to help conserve energy?
Possibilities:
- washing all clothes in warm water
- turning off the lights when not in use
- letting the water run when brushing teeth
- using bags made of plastic instead of paper

turning off the lights when not in use