Didn't you buy ____ when you went shopping?
Answer is (A)
We can use "any" in negative sentences with plural countable nouns
e.g., Aren't there any books?
We can use "any" in negative sentences with uncountable nouns
e.g., Isn't there any paper? - here paper is uncountable
In general, any is used in negative sentences and questions. Thus option a is correct.
64.3k questions
77.9k answers
244k comments
80.0k users