The correct answer would be
D) y = 32x
This is the correct answer since a proportional relationship equation looks like this
y = mx
So, in order to find out the answer, you must find the option that looks similar to the equation example.
Once you find this option, compare them together to make sure that it is the right answer.
y = mx
y = 32x
Since the m stands for a number in the equation example, we can say that the correct answer is
D) y = 32x