The correct option is A Intertropical convergence zone
Intertropical convergence zone (ITCZ) is generally located near the equator, almost parallel to it. It moves north or south of the equator with the apparent movement of the sun. As the Sun moves south or north of the equator, the ITCZ shifts south or north. The ITCZ is also referred to as “monsoon trough”, during the monsoon season.