Answer:
The answer would be C.
Explanation:
The sum of positive and negative intergers can be either positive or negative.
This is true because, for example:
-6 +3 = -3 while,
6 - 3 = 3
While these numbers are able to be both negative and a positive, you can get a positive and a negative answer from both.
A and D would not be correct, because if you have only two positive numbers or more, you can only get a positive number, for example:
2 + 2 = 4 and
3 + 3 + 3 = 9
B would have been correct if they wanted the product of integers, because the only times when you can get a positive from negatives numbers is when you multiply or possibly divide.
Hope this helps!