According to forest policy, how much area of country required under forest?

Option (b) is correct because National forest policy had a target of keeping 33% of land area under forest in India so as to maintain ecological balance in a country. Forests help in the conservation of the natural environment so it is suggested that the one third of total land area should be covered with forests.

Option (a) is not correct because 22% is the actual percentage of forest area and according to forest policy it will reach up to 33% in future.

Option (c) is not correct because 10% is very less to maintain ecological balance in a country.

Option (d) is not correct because 20% is also less as we know minimum one third of total land area should be covered with forests to maintain ecological balance.