Concept:River capture changes the course of a river and leaves its former valley dry.Explanation:During river capture, the capturing river erodes its headwaters backwards and intercepts the flow of another river.After capture, the water of the captured river is diverted into the capturing river.The lower part of the captured river’s old valley is abandoned and receives no water.This dry, V-shaped former valley cut through higher land is called a wind gap.It is the distinct landform produced directly by river capture.Answer:A. Wind gap