What social science involves studying legal policies

Answer: law

Explanation:

Social science can be define as the scientific study of human society and their relationship among themselves.

A law can be define as rules which is enforced over the society to regulate it's functioning, restricting the ill-legitimate activities like crime, and safeguarding the rights of the human beings, and animals.

On the basis of the above description, the law is the social science which involves the studying of the legal policies.