Explanation provided in the Verbal review
B) This form of the appositive is the most efficient way to express the comparison.Depending on when the sentence was written and what the writer intended to express, the verb form could be eitherhad contributed orhas contributed .The use ofhas contributed implies that, from the perspective of the sentence, the comparison between German-born US residents and those from other countries still holds true.
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B) This form of the appositive is the most efficient way to express the comparison.Depending on when the sentence was written and what the writer intended to express, the verb form could be eitherhad contributed orhas contributed .The use ofhas contributed implies that, from the perspective of the sentence, the comparison between German-born US residents and those from other countries still holds true.
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