Answer:
D) 64 cm^3
Explanation:
The volume of a cube is calculated using the formula:

In the figure:
![s=3.89\approx4\operatorname{cm}]()
Note that since we need the estimated volume, we can round the side length to the nearest whole number.
Therefore, the estimated volume of the cube will be:
![V=4^3=64\operatorname{cm}^3]()
The correct option is D.