Non-renewable natural resources like oil and natural gas take a very long time to form. That is one reason for the building of windmill farms that produce electricity from the wind's movement. What is another reason?
A) Wind energy is more efficient than solar energy.
B) The energy produced on a windmill farm is much cheaper.
C) The energy produced on a windmill farm is much more expensive.
D) Windmill farms produce energy without producing as much pollution.