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: Unknown
[{'content': 'A pregnant uterus is an example of: \nSelect and explain. \nA. Metaplasia, B. Dysplasia, C. Atrophy, D. Hypertrophy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) HypertrophyRef: Robbing pathology 9th ed. /34* Hypertrophy refers to an increase in the size of cells,that results in an increase in the size of the affected organ.* The most common stimulus for hypertrophy of muscle is increased workload.* A gravid uterus is an example of hypertrophy and hyperplasia both but mainly hypertrophy.* Robbin\'s 9th ed. /34 states: "The massive physiologic growth of the uterus duringpregnancy is a good example of hormone-induced enlargement of an organ that results mainly from hypertrophy of muscle fibers"* Breast enlargement at puberty and at pregnancy is also an example of hypertrophy and hyperplasia both.', 'role': 'assistant'}]