This is a great example of distributive property in action!
First, let's rewrite the problem as an addition instead of a subtraction so it's easier to see all the negative numbers:
For this problem, you would distribute the -2 to both the 8 and the -3x:
-2 * 8 + -2*-3x= -16+6x (Since -2*8= -16 and -2*-3=6)
Now, let's look at the possible solutions. There is no exact copy of our answer, but 6x-16 is the same as our solution of -16+6x, so the answer is d.