Question

A wadi is a riverbed that is found in arid areas and that __________.
A.
is filled with water year-round
B.
once held water, but is now always dry
C.
flows briefly after a period of rainfall
D.
provides a water source for an oasis

Answer 1

C. flows briefly after a period of rainfall

A wadi is a dry riverbed or channel in arid regions that remains dry most of the year but carries water temporarily after rains.