The answer that best supports the idea that Luther Vandross was one of the most influential R&B singers of his time is;
In this passage where the history of Luther Vandross in singing was recanted, the statement that correctly shows how influential he was as an R&B singer is the one that tells of the number of Grammy Awards he has acquired.
Awards are signs of recognition of an individual's efforts in an industry. A Grammy Award is also a highly coveted award among singers.
So, for Luther Vandross to have gotten 8 of them, shows that he was really influential.
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