What would happen to the planet of the hydrologic cycle stopped functioning?

The water cycle brings water to everywhere on land, and is the reason that we have rain, snow, streams, and all other kinds of precipitation. Stopping it would cause an endless drought.

Along with a lack of water flow, many existing water sources would lack filtering. No water flow in lakes would cause overgrowth, killing many species of fish and other lake wildlife

it sounds like either a or c