What is the correct meaning of a water divide?

Correct answer: High land separating two drainage basins

Correct answer: C, high land separating two drainage basins. A water divide is a ridge, upland or other elevated surface that separates the areas from which water flows into two different river systems. Rain falling on one side of the divide flows toward one drainage basin, while rain falling on the other side flows toward another basin. A is incorrect because the mouth is the place where a river ends in a sea, lake or another river. B is incorrect because the deep part of a lake has no meaning related to separating drainage basins. D is incorrect because a sea wave is a movement of seawater and is not a landform separating river systems. A divide need not always be a very high mountain; even a raised ridge or upland can direct water in different directions. Memory cue: “Divide divides drainage.” Do not confuse a water divide with a watershed in every usage, although both terms are closely related in school geography.