Answer:
D. form when headward erosion causes one stream to intersect another
Explanation:
Pirate streams -
It is the condition, when the drainage system of a river is directed to flow to to the nearby stream , rather than to its usual flow, is referred to as pirate streams.
This type of condition can originate by several reasons , like -
1. Erosion
2. Tectonic moments
3. natural calamity, etc.
Hence, from the given options , the correct statement regarding pirate streams is D.
