The main cause for the environment problem in India is

Option b) is the correct option because of its immense population that has increased rapidly from 300 million in 1947 to 1210 million at present.

Option a) is incorrect as it is not relevant with the statistical data’s available.

Option c) is incorrect as steps were taken to control the growth of population over time.

Option d) is incorrect as India has an amount of population which is large enough to exclude itself from this category.