Question

this is a policy that the governments actions towards its citizens must follow established rules and procedures.

Explanation:

The description is about a policy related to government actions and procedures, which falls under the subfield of Politics (within Social Science) as it deals with governmental policies and administrative procedures.

Answer:

The subfield that best applies is Politics (under Social Science). The policy described pertains to government - citizen interactions and adherence to rules/procedures, which is a key area of study in Politics.