Due to his tours, he got to meet . . . . . . . . of people.

A. a lot

B. much

C. little

D. several

Answer: Option A

Solution(By Examveda Team)

'A lot' of and lots of can both be used with plural countable nouns and with singular uncountable nouns for affirmatives, negatives, and questions.
Examples: We've got lots of things to do.
That's a lot of money.
There weren't a lot of choices.