According to Census 2001, the percentage of the Scheduled Tribes population in India is:

7.2
7.5
8.2
8.5

The correct answer is (a) 7.20.

Scheduled Tribes are indigenous peoples who are indigenous to India. They are also known as Adivasis or tribals. According to the 2001 Census of India, the percentage of the Scheduled Tribes population in India is 7.20%. This means that out of the total population of India, 7.20% are Scheduled Tribes.

The Scheduled Tribes are a diverse group of people with a wide range of cultures and languages. They are found in all parts of India, but they are concentrated in the central and eastern parts of the country. The Scheduled Tribes are a marginalized group and face many challenges, including poverty, illiteracy, and discrimination.

The Indian government has taken a number of steps to improve the lives of the Scheduled Tribes. These include providing them with education, health care, and employment opportunities. The government has also enacted a number of laws to protect the rights of the Scheduled Tribes.

Despite the efforts of the government, the Scheduled Tribes continue to face many challenges. They are still a marginalized group and they continue to be discriminated against. The Indian government needs to do more to improve the lives of the Scheduled Tribes.

Here is a brief explanation of each option:

(a) 7.20: This is the correct answer. According to the 2001 Census of India, the percentage of the Scheduled Tribes population in India is 7.20%.

(b) 7.50: This is not the correct answer. The percentage of the Scheduled Tribes population in India is not 7.50%.

(c) 8.20: This is not the correct answer. The percentage of the Scheduled Tribes population in India is not 8.20%.

(d) 8.50: This is not the correct answer. The percentage of the Scheduled Tribes population in India is not 8.50%.