Discussion
Assertion (A): Lightning channels are conspicuously branched.
Reason (R): The stepped leader explores several paths and only one completes the connection to ground.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the cause. The descending leader repeatedly divides, exploring several routes downward, and only one branch reaches the ground and carries the return stroke. The others are left behind as the fainter side branches of the visible flash. Because they were formed by a descending leader, they point downward - which is how the direction of the leader can be read from a photograph.
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