B. The continents on a map looked like they fit together.
A is the theory he proposed <em>after</em> making this observation
C and D would disprove his theory, not support it.
Prevailing winds bring air from one type of climate to another climate. In example, warm winds that travel over water tend to pick up or collect moisture as the travel; by the water vapor in the air, it then moves to colder climates; and those climates collect heavy rainfall.
