The largest percentage share of the Scheduled Castes population is in:

Uttar Pradesh
Punjab
Maharashtra
Andhra Pradesh

The correct answer is (a) Uttar Pradesh.

Scheduled Castes (SCs) are a group of people who have been historically discriminated against in India. They are also known as Dalits, which means “the oppressed”. The SC population in India is about 16% of the total population.

Uttar Pradesh has the largest percentage share of the SC population, at 21.1%. This is followed by Bihar (16.2%), Rajasthan (16.1%), Madhya Pradesh (15.6%), and West Bengal (14.7%).

The SC population in Punjab is only 3.3%, which is the lowest among all states. This is because the SC population in Punjab has been relatively well-integrated into the mainstream society.

The SC population in Maharashtra is 13.1%. This is higher than the national average, but it is lower than the SC population in Uttar Pradesh, Bihar, Rajasthan, Madhya Pradesh, and West Bengal.

The SC population in Andhra Pradesh is 12.9%. This is also higher than the national average, but it is lower than the SC population in Uttar Pradesh, Bihar, Rajasthan, Madhya Pradesh, West Bengal, and Punjab.

The SC population in India is a diverse group of people with a rich history and culture. They have made significant contributions to Indian society in many fields, including politics, education, and the arts.