The success of the Large Plantations of the Southern Colonies depended upon Slavery.
In sentence D, "nobody" is singular while the pronoun "they" is plural. In this sentence, the pronoun "they" refers back to "nobody" as its antecedent. but "nobody" is a singular indefinite pronoun. Thus, there is an error in pronoun-antecedent agreement.
The answer is false:)
hope this helped
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