C. The latitudes near the equator receive direct sunlight, which causes a low-pressure system.
Explanation:
The spherical shape of Earth has very big influence on the climatic conditions on it. The sunlight is falling at different angles at different places, the air pressure is different, the wind belts are influenced by it, the temperature variations are very large etc.
Near the equator, for example, the sunlight falls at more direct angle. This means that the sunlight is more concentrated, so the surface receives more heat. The temperatures are high because of this all year round, and the air pressure is mostly low, as the warm air is more dispersed and weighs less, and the high evaporation means lot of water vapor which lowers the weight of the air even more.
