Answer:
C
Step-by-step explanation:
Googling this, we find that when -f(x) = f(-x), our function is odd. This means that when we multiply our input by -1, our output will multiply by -1 as well.
A is incorrect because when we multiply our input (-1) by -1, our output does not change
B is incorrect because it isn't even a function -- there are multiple outputs for the input
C is correct because when we multiply the input by -1 (as -2 goes to 2), the output multiplies by -1 (32 goes to -32)
D is incorrect because when we multiply the input by -1, the output stays the same. This is an example of an even function.