Administrative law refers to the body of law that governs the activities of administrative agencies of government. It includes rules, regulations, and procedures created by the executive branch to carry out legislative acts.
Option A: law passed by the Union
Incorrect. These are legislative laws, not administrative.
Option B: law or rules made by the executive
Correct. It involves rules formed by administrative authorities.
Option C: laws relating to administration of non-Governmental institutions
Incorrect. It focuses on government actions.
Option D: all the above
Incorrect. Only option B is correct.