The body of rules, ideas, principles and techniques that applies to a particular subject, especially when seen as distinct from actual is called?

The body of rules, ideas, principles and techniques that applies to a particular subject, especially when seen as distinct from actual is called? (a) Rules (b) Regulations (c) Design (d) Theory ✅ Correct Answer: (d) Theory Explanation: A theory provides a systematic framework of ideas and principles explaining phenomena or practices in a given field.