A tributary is a river that

A. has a bank of less than 22 feet.

B. is located in California.

C. flows into another river or stream.

D. is in the southeastern United States

the answer I C - Flows into another river or stream

the answer is c because none of the other answers make sense and also

tributary's can flow into big body's of water wherever they are. If it is a river and flows into the ocean it would be considered as a tributary because no other bodies of water do that unless its connected