Respuesta :
The answer would be the first sentence given,
Both my great-grandfather and my great-uncle immigrated to America from Kazakhstan.
Both my great-grandfather and my great-uncle immigrated to America from Kazakhstan.
Correlative conjunctions are pairs and they work together.
Therefore, sentence A would be the best answer. The correlative conjunctions are "both" and "and".
Therefore, sentence A would be the best answer. The correlative conjunctions are "both" and "and".