The area of Earth's surface that receives the greatest annual insolation is

The area of Earth's surface that receives the greatest annual insolation is equinoxes

Explanation:

Insolation is the amount of solar energy received on the planet's surface. It is measured by the amount of solar energy received per square centimeter in a minute.

It varies according to the season, latitude, transparency of the atmosphere and aspect of the slope. Isolation affects the temperature of the area, more the insolation, higher would be the temperature. It is maximum at the equator and no solar energy is received at the poles.