Question: The Earth's equator receives more direct sunlight than the regions to its north and south. This distribution of sunlight accounts directly for which phenomenon?

  Options: 
 A. The westward deflection of equatorial winds.
 B. The movement of rising air currents away from the equator.
 C. The rotation of storm systems.
 D. The formation of calm "eyes" in the centers of cyclones.
Answer: B