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: Dental
[{'content': 'Collection of information from the representative units in the sample is known as: \nSelect and explain. \nA. Census, B. Sampling, C. Counting, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Census is the collection of information from all individuals in a population.\nSampling\xa0is the process or technique of selecting\xa0a\xa0sample of appropriate characteristics and adequate size.\nAdvantages of sampling\n\nIt reduces the cost of the investigation, the time required and the number of personnel involved.\nIt allows a thorough investigation of the units of observation.\nA sample can be covered more adequately and in more depth than can a total population.\n\nReference: Essentials of Preventive and Community Dentistry, Soben Peter, 4th ed page no 288', 'role': 'assistant'}]