What are the two most important factors determining the climate of an area? 

A)  ocean currents and light 
B)  temperature and precipitation 
C)  precipitation and light 
D)  temperature and ocean currents

The two most important factors determining the climate of an area are temperature and precipitation. Temperature affects the amount of evaporation and amount of moisture in the air, which affects precipitation. Precipitation levels then determine the type of vegetation and ecosystems that can exist in the area, which in turn further affects climate. Ocean currents and light can also have an impact on climate, but they are not as significant as temperature and precipitation.