This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Patterns of Inter-relationships between persons in a society is ? 
Select and explain. 
A. Social structure, B. Social psychology, C. Herd structure, D. Social science
A: Social structure
Answer: A: Social structure 
Explanation: Ans. is 'a' i.e., Social structure Patterns of inter-relationships between persons in a society is called social structure. Note - Study of human inter-relationship is called sociology.