Climatology is a sub-specialty of
a. marine biology.
b. meteorology.
c. environmental science.
d. oceanography.

Climatology is a sub-specialty of B. meteorology. Meteorology has to do with the weather, and climate changes on Earth. So obviously, anything to do with climate has to do with meteorology. And given that climatology studies the climate, it would fall under the category of meteorology.

Cwish this can you