If c - 8 is in odd integer, which of the following could be the value of c

The value of c would have to be an odd integer because an odd integer minus an even integer (8) is always an odd integer. If you are looking at answer choices, the answer will probably the odd integer. (I don't know what your answer choices are. You said which of the following, so there are probably answer choices.)

The answer is part a: use