Once, I have visited America. I know . . . . . cities there.

A. few

B. a few

C. little

D. a little

Answer: Option B

Solution(By Examveda Team)

Few is a quantifier used with plural countable nouns. Little is used with singular uncountable nouns. Cities are plural countable nouns. "A few" means some. Option B is correct.
Once, I have visited America. I know a few cities there.