Here are the correct answers and explanations for each of your questions:
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A. The obstetrician advised doctors to wash their hands.
- This fact is likely to be in the conclusion because it connects directly to the central idea introduced in the excerpt—Ignaz Semmelweis promoting handwashing to save lives. Conclusions often reflect or summarize main points made in the article.
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Mocked; Value
- This sentence indicates that during his lifetime, Dr. Semmelweis was mocked for his ideas about handwashing, but today people see the value of his work. It contrasts past perceptions with the current understanding of his contributions.
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D. a concise summary of the central idea of a text
- A thesis statement articulates the main argument or point of an essay or paper, summarizing its central idea succinctly.
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A. Challenge yourself to join the locavore movement and eat only locally produced fruits and vegetables to reduce your carbon footprint.
- This conclusion effectively encourages action, tying back to the introduction about the locavore movement and its benefits, making it a strong way to end the article.
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C. refers back to key words, metaphors, questions, or ideas from the introduction
- A is not a necessary characteristic for a concluding statement. A strong conclusion often connects back to the ideas presented earlier (C) and synthesizes the discussion, but it does not require new quotes or statistics. The second characteristic you are looking for, while not provided in options, could also logically be something that summarizes or restates the main argument in a new way.
To clarify further, the best choices in a conclusion are those that reconvene the key themes or ideas (like C) and lead to a broader take on the implications or actions suggested (like A).