It's a high-pressure zone with sinking air is not true of the Intertropical Convergence Zone. This is because the Intertropical Convergence Zone is low pressure zone with sinking air therefore it is wrong statement.
Intertropical Convergence Zone is the region surrounding Earth close to the Equator where the northeast and southeast trade blows meet. It features heavy precipitation. It is also known as the doldrums. It’s where the trade winds collide. These are all correct statements about the Intertropical Convergence Zone. It is a low pressure zone.