What is the term for the area between the easterly and westerly trade winds known for frequent calms?

The correct answer is the term for the area between the easterly and westerly trade winds that is known for frequent calms is the Doldrums.

This region, located near the equator, is characterized by low pressure and is the point where the trade winds from the Northern and Southern Hemispheres converge. In the Doldrums, the winds can be light and variable, often resulting in periods of calm weather. This phenomenon is primarily due to the intense heating of the equatorial region, which causes air to rise, leading to a lack of surface wind in these areas.

While the other terms are relevant to wind patterns and climatic conditions, they do not specifically refer to the area that embodies the frequent calms experienced between the easterly and westerly trade winds. The Trade Winds themselves are the consistent wind patterns that flow toward the equator but do not describe the calm area. The Equatorial Region denotes the geographic area near the equator without focusing on wind characteristics. The Intertropical Convergence Zone (ITCZ) refers to the broader atmospheric phenomenon of rising air and the convergence of trade winds, but it may not always emphasize the calmness as centrally as the term Doldrums does.