Ineed ! i'm stuck between c or d.

I think it is C I'm not sure let me know it I'm right.

C has the greatest rate of change. 

I.) 4(1)-3=1
4(2)-3=5
Rate of change is 4
II.) 1/2(1)+5=5.5
1/2(2)+5=6
Rate of Change is 0.5
III.) Change in X = 1
Change in Y = 6
Rate of Change is 5

C models the greatest rate of change.

:)

The surface area would be 576 because you multiply all the numbers then multiply that number by 6