Question

Which of the following is the cleanest source of energy?
A) Biofuel B) Fossil fuel C) Nuclear power D) Wind energy

Answer 1

Answer

wind energy

Explanation:

bio fuel and fossil fuel give of smoke while making nuclear power process also gives of pollutants. But wind doesn't give of pollutant and is already present.

Answer 2

(a)$\huge\mathrm\purple{Wind\:\: energy}$