Which of the following describes a watershed's function?

A watershed serves several essential functions, with one of the primary roles being the collection and drainage of water from a specific area. This function encompasses the entire land area that channels rainfall and snowmelt into a common outlet, such as a river, lake, or ocean. The boundaries of a watershed are defined by the topography of the land, as it includes all the surfaces that contribute water to a single waterway.

While filtering pollutants, providing habitat, and serving recreational purposes are important functions related to watersheds, they are more associated with the ecological and social benefits derived from them rather than defining the watershed's structural function. The fundamental aspect is the collection and movement of water, which is crucial for maintaining hydrological cycles, replenishing groundwater, and sustaining ecosystems within the watershed area.