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: Patterns of inter-relationships between persons in a society is called social structure.