[A] : In a food chain , membrane of successive higher levels are fewer in number .
[R] : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level .

Options

A. Assertion is correct, reason is correct, reason is a correct explanation for assertion.
B. Assertion is correct, reason is correct, reason is not a correct explanation for assertion
C. Assertion is correct, reason is incorrect
D. Assertion is incorrect, reason is correct.

Answer

D

Explanation

When food is made available automatically the next higher level of organism in the hierarchy should increase. This is because when the forest cover got depleted it led to the increase in the number of endangered species. If the deer population is more, it automatically lead stoan increase in the tiger population.