Step 1: Forest cover.
According to the National Forest Policy, India aims to maintain one-third (33%) of its land area under forest or tree cover.
Step 2: Analyzing the options.
(A) 21-25%: Not correct.
(B) 24-62%: Incorrect, not a standard figure.
(C) 33%: Correct — as per policy target.
(D) 18%: Too low.
Step 3: Conclusion.
The correct answer is (C) 33%.