using larger screens with better color. explaining how to avoid pressure from commercials. providing a setting that encourages people to exercise more. warning people of dangers such as bad weather or accidents.
I gave my students this multiple choice question: The use of television has improved safety by

Only one answer is correct among these 4 choices:
- using larger screens with better color.
- explaining how to avoid pressure from commercials.
- providing a setting that encourages people to exercise more.
- warning people of dangers such as bad weather or accidents.

Could you tell me which one is correct?

warning people of dangers such as bad weather or accidents.