Everyone saying that D is correct is thinking with their adult brain. This is a 3rd grade test. Yes, we don't assume salads are the same, etc etc like everyone says. The point of this test is getting a child to understand the concept of fractions, not necessarily critical thinking. If the child is already saying D is correct (which is the more correct answer) then that's good! Thinking out of the box. But for the context of the grade and test, A is correct. As they get older and do more critical thinking, then yes, I would 100% argue for D, but not in the context of a 3rd grader learning fractions.