Drought is an extended period of reduced precipitation and can be caused by:

(A) changes in wind directions for a long time
(B) all of these
(C) a typical high-pressure weather systems
(D) changes in ocean currents

(A) changes in wind directions for a long time.

Explanation:

A drought is a deficiency of precipitation that occurs various extend the period of time and it's usually a result of the shortage of water. And causes adverse effects n the life forms and is a temporal change or a long terms changes caused by the climatic changes that place over the region

B.a pop up at ion changes in response to a change in the environment.

Answer(a); // soil salinization and waterlogging;