This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social science, Mental health & Genetics, 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: Social structure refers to the pattern of inter relationships between persons.Every society has a social structure - a complex of major institutions ,groups,power structure and status hierarchy. Ref:(p.727) 25 th edition Park's textbook of Preventive and Social Medicine.