Read the paragraph.___________________________________. Writing science fiction lets an author think about what society might be like in the future. Will cars fly? Maybe robots will teach school? Writing a fantasy story lets an author be imaginative as well. The fantasy author can invent talking animals that live in magical worlds.Which is best as a topic sentence at the beginning of the paragraph?

The paragraph describes how both science fiction and fantasy let authors use imagination, then gives an example of each. Choice C, “Science fiction and fantasy are genres that allow authors to be imaginative,” introduces both subjects and summarizes the paragraph. Choice A focuses only on science fiction, while B and D do not capture the paragraph’s central idea as clearly.

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