Final answer:
The large winds that circle Earth are primarily because the equator is warmer than the north and south poles, leading to air movement due to pressure differences. So the correcct option is C.
Step-by-step explanation:
The large winds that circle the Earth occur because the equator is warm compared to the north and south poles.
The correct answer to the question is option C) the equator is warmer than the north and south poles. The equator receives more direct sunlight throughout the year, leading to higher temperatures. These temperature differences cause variations in air pressure, which results in air movement and the formation of large wind patterns.
Additionally, the Earth's rotation and the Coriolis effect influence the direction and nature of these winds, contributing to the complexity of global circulation patterns.