Final answer:
Convection currents are responsible for the primary movement of atmospheric air bodies. This circulation pattern is driven by the flow of hot air from the tropics to the poles and the flow of cold air from the poles toward the tropics. Option A is correct.
Step-by-step explanation:
The primary movement of atmospheric air bodies is caused by convection currents. Convection is driven by the flow of hot air from the tropics to the poles and the flow of cold air from the poles toward the tropics. This circulation pattern is influenced by Earth's rotation, resulting in easterly flow of air in the northern hemisphere. Convection currents play a significant role in Earth's atmospheric circulation and weather patterns.