I would say A. "Be quiet, and you ought to be considerate of others." would be the most appropriate answer.:)
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There is not a valid answer choice, but go with sentence 3 because C is always right
Answer:
Apposition is a grammatical construction in which two elements, normally noun phrases, are placed side by side so that one element identifies the other in a different way; the two elements are said to be in apposition.
Explanation:
They didn't believe or understand what they were,they were going and what was going to happen