This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Social & Preventive Medicine
[{'content': 'Movement across socioeconomic levels is known as? \nSelect and explain. \nA. Social insurance, B. Social mobility, C. Social equality, D. Social upliftment', 'role': 'user'}, {'content': "Answer: B \nExplanation: The socioeconomic status of an individual / family can change over time due to the change in their literacy, job and income An individual belonging to a low socioeconomic class can move to a higher class by means of better income Similarly, an individual in a higher class may move to a lower class due to loss of his job This change in socioeconomic status of an individual / family over time is known as Social Mobility Ref : Park's Textbook of Preventive medicine", 'role': 'assistant'}]