GRE Text Completion Question 3454
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Source: NO7
Exposure to sustained noise has been claimed to（i）_____blood pressure regulation in human beings and, particularly, to increase hypertension, even though some researchers have obtained inconclusive results that（ii）_____the relationship.
- A sharpen.. conflate
- B increase.. diminish
- C aggravate.. buttress
- D disrupt.. neutralize
- E impair.. obscure