Final answer:
The volume of a 0.750-carat diamond is 0.75 cm³.
Step-by-step explanation:
The volume of a diamond can be calculated using the formula for the volume of a cylinder, which is V = πr²h. Since the diamond is most likely in the shape of a cube, we can approximate the volume using its side length. In this case, the volume of a 0.750-carat diamond would be 0.75 cm³. Therefore, the correct answer choice is A) 0.15 cm³.