The correct answer is (a) 12.20%.
The Schedule Castes (SCs) are a group of people who have been historically discriminated against in India. They are listed in the Indian Constitution as being socially and educationally backward. The SCs make up about 16% of the total population of India.
The 2011 census of India found that the percentage of SCs in Uttarakhand State was 12.20%. This is lower than the national average of 16%. The reason for this is that Uttarakhand is a relatively new state, having been formed in 2000. As a result, it has a smaller population of SCs than some of the older states.
The SCs in Uttarakhand face a number of challenges, including poverty, illiteracy, and social discrimination. However, there have been some positive developments in recent years. For example, the government has implemented a number of programs to improve the education and employment opportunities of SCs. As a result, the situation of SCs in Uttarakhand is slowly improving.
The other options are incorrect because they do not represent the percentage of SCs in Uttarakhand State as per the 2011 census.