Explanation

In the Hadley cell, warm moist air rises near the equator at the intertropical convergence zone (doldrums) and descends at about 30 degrees latitude, creating the subtropical high-pressure cells. Hence C. The rising branch of the Hadley cell lies at the equator, where the intertropical convergence zone produces heavy rainfall. The descending branch at about 30 degrees latitude creates the world's subtropical deserts. Option C names the descending branch. Hence C.