The Colorado River Is an Exotic Stream

Multiple Choice

The Colorado River is an exotic stream. This means

A) it contains a variety of exotic species, which it transports from its source to all regions through which it flows.
B) it mostly flows through arid environments, though its headwaters are located in a region of water surplus.
C) it is used for multiple purposes, including hydroelectricity generation, irrigation, water supplies, and recreation.
D) it crosses multiple countries, as well as states, in its path to the sea.