There are three latitudinal climate zones in the Northern Hemisphere. The climate zone begins at the equator and extends to about 23°N latitude. Compared with the other two latitudinal climate zones, this zone receives amount of solar energy.
A.
oceanic; the greatest
B.
tropical; the greatest
C.
temperate; a moderate
D.
polar; the least

Its tropical; the greatest

Explanation:

There are three latitudinal climate zones in each hemisphere—the tropical climate zone, the temperate climate zone, and the polar climate zone. These zones are defined by differences in solar radiation received from the Sun. In the Northern Hemisphere, the tropical climate zone begins at the equator and extends to about 23°N latitude. Compared with the other two latitudinal climate zones, this zone receives the greatest amount of solar energy.

The temperate climate zone, which begins at about 23°N latitude and extends to about 67°N latitude receives a moderate amount of solar energy. The polar climate zone, which begins at about 67°N latitude and extends to the North Pole, receives the least amount of solar energy of the three zones.