Which of the following absorbs the insolation from the sun and preserves the earth's radiated heat, thus acting like a blanket allowing the earth neither to become too cold nor too hot?

A. Dust

B. Water vapour

C. Ozone

D. Nitrogen

Answer: Option B

Solution(By Examveda Team)

Water vapour absorbs parts of the insolation from sun and thus reduces its amount. It also preserves the earth's radiated heat. It thus acts like a blanket allowing the earth neither to become too cold nor too hot.