Answer:
A. 7.07 units
Step-by-step explanation:
Use the distance formula for coordinates:

Fill in the coordinates accordingly:

which simplifies down to

which is of course

Plug that into your calculator and you'll get the answer
(-3,4)(0,-3)
slope = (-3 - 4) / (0 - (-3) = -7/3 <=
1) calculate the volume of the tri prism 2) find area of the base face 3) find the height 4) multiply area of the triangle base time height 5) answer will be in cubic units