Which of the following numbers could be used to specify how many cups of flour should be used in a bread recipe?

A. 2 3/4
B. 4/7
C. -3
D. Square root of 3

A. 2 3/4

The number that could be used to specify how many cups of flour should be used in a bread recipe is:

A. 2 3/4

The options B, C, and D are not appropriate measurements for specifying the amount of flour in a recipe.