The following question, consist of two words each that have a certain relationship to each other, followed by four lettered pairs of words. Select the lettered pair that has the same relationship as the original pair of words: Flow : River :: Stagnant : ?

The correct answer is D. Pool.

The relationship between “flow” and “river” is that a river is a body of water that flows. The relationship between “stagnant” and “pool” is that a pool is a body of water that is not flowing.

A canal is a man-made waterway that is used for transportation or irrigation. A stream is a small body of water that flows over land. A river is a large body of water that flows over land.

A pool is a small body of water that is not flowing. It can be man-made or natural. Pools are often used for swimming, bathing, or recreation.