Where is the concentration of sunlight the greatest?

A. The equator

B. The South Pole

C. The horse latitudes

D. The North Pole

During the course of one whole year, the sun wiggles north and south

between the Tropic of Cancer and the Tropic of Capricorn.

The equator is the line straight through the middle, exactly between

the two tropics.

So during the course of the whole year, on the average, the equator

is the line where the concentration of sunlight is the greatest.