Help with the first mcq pls

https://preview.redd.it/lke6bdj86uoe1.jpg?width=2378&format=pjpg&auto=webp&s=cdf188311f5dde5e10f3943c2d03151af1893c99

Is the answer pitch or frequency? Im guessing its pitch because both pitch and grave sound are qualitative but frequency is quantitative...