OG详解-OG1 文法 Q15

Choice C is the best answer. The sentence compares the two women’s contributions to the march: Hedgeman worked behind the scenes to make sure a woman speaker was included, whereas Bates actually spoke at the event.

Choice A is incorrect. While it acknowledges that the two women both contributed to the march, it doesn’t indicate what Hedgeman did, so no comparison is made. Choice B is incorrect. While the sentence provides information about the two women, it doesn’t mention anything about Bates’s contribution to the march. Choice D is incorrect. While the sentence indicates that the two women both fought for civil rights, it doesn’t compare their individual contributions to the march.