Integers are set of whole numbers and their counterparts, for example:
..., -3, -2, -1, 0, 1, 2, 3, ...
If the given integer is below 0, then its opposite will be positive. Let's check it on the example:
Opposite of 5 is -5 (so Cindy is right here)
But opposite of -5 is 5 (so she's wrong)
