Choose the word which is different from the rest.

The answer is B. Suez.

A, Niger, is a river in Africa. C, Mississippi, is a river in the United States. D, Colorado, is a river in the United States. Suez is a canal in Egypt.

A river is a natural stream of water flowing in a channel on the surface of the land. A canal is a man-made waterway, usually artificial and constructed to connect two natural waterways or to provide a navigable route through a region otherwise difficult or impossible to cross.