Correct Answer: C
Explanation:
We can use the process of elimination to find the correct answer.
It can't be Imaginary because we're not dividing by a negative number.
It can't be Complex because the numbers aren't a mix of real and imaginary numbers.
It can't be Irrational because they aren't fractions.
It can't be Natural because there are negative numbers.
It must be Integers then! All the numbers are whole numbers that fit on the number line.