<h2>
Hello!</h2>
The answer is:
D. The volume is the product of the area of the base, (x+8)(x-3) and the height, 2x-5
<h2>Why?</h2>
From the statement we know that the volume of the block is given by the following expression:

We also know that we can calculate the volume of a block using the following equation:

So, from the given picture we know that:

Hence, we have that the correct option is:
D. The volume is the product of the area of the base, (x+8)(x-3) and the height, 2x-5
Have a nice day!