The criteria for specifying STs include:

The correct answer is: All of the above.

The criteria for specifying Scheduled Tribes (STs) include:

• Primitive traits: This refers to the way of life of the STs, which is often characterized by a lack of contact with the outside world, a subsistence economy, and a strong sense of community.
• Geographical isolation: STs are often found in remote areas, which can make it difficult for them to access education, healthcare, and other essential services.
• Backwardness: STs are often economically and socially disadvantaged, which can make it difficult for them to participate in mainstream society.

The government of India has a number of programs and policies in place to promote the welfare of STs. These programs include providing access to education, healthcare, and employment opportunities, as well as protecting their land and cultural rights.

It is important to note that the criteria for specifying STs are not static. They are constantly being reviewed and updated to ensure that they are relevant to the changing needs of ST communities.