This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Definition and Concepts in Sociology & Psychology, Subject name: Social & Preventive Medicine
[{'content': 'All of the following are temporary social groups except? \nSelect and explain. \nA. Mob, B. Crowd, C. Band, D. Herd', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Temporary Social Groups: Crowd Group of people come together temporarily, for a sho period, motivated by a common interest or curiosity (e.g., to witness a football match) Lacks internal organization & leadership; When interest is over, crowd disperses. Mob It is crowd with a leader, who forces members into action & is more emotional than crowd. There may be symbol like flag/slogan. It is unstable,without internal organization; When purpose is achieved, group disperses Herd Crowd with a leader whose orders are followed without questions by group members. Eg: tourist group under a guide. Permanent Spatial Groups Band Village Towns & cities State', 'role': 'assistant'}]