Read the sentence carefully.A student who submits a research paper with a weak thesis and multiple sources are going to receive a higher grade than students who submit a research paper with a strong thesis and only a few sources.Which sentence corrects the error in subject-verb agreement?

The main subject is the singular noun “A student,” so the verb describing that student must be “is,” not “are.” The relative clause also correctly uses “submits” with singular “student.” In the comparison, “students” is plural, so “submit” is correct. Choice A makes all these verbs agree with their subjects.

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