C because if the circle is not filled in it means that you do not need to underline the <> sigh then all you have to do after that is ask your self is x grater or less then -2 (which way is the alligator wanting to munch)
The common difference of this arithmetic sequence is 5. Adding 5 to an even number gives an odd number, and vice versa. Hence the "parity" of the terms in the sequence must alternate between odd and even.
