Question

What happens when you increase energy efficiency?

You reduce your use of products or activities that use energy.
You substitute an activity that uses energy with an activity that doesn't use
energy.
You turn off the lights when you leave a room.
You use less energy to provide the same service.

Answer 1

Think it's--You use less energy to provide the same service.

Step-by-step explanation:

If your getting energy more efficient,(If that means faster) you don't need to put as much energy since giving the same amount of energy and then doubling it would be too much or a waste.