What does the volume of a regular solid depend on?

The volume of a regular solid depends on its dimensions, specifically its length, width, and height. For example, in the case of a rectangular prism, the volume can be calculated using the formula: Volume = length × width × height. This relationship reflects how the three dimensions interact with each other to determine the amount of space the solid occupies.

In contrast, other options do not accurately capture the dependence of volume. Weight is not a dimension and does not affect volume directly. Similarly, mass and volume, while related through density, do not encompass the geometric factors that determine the volume of a shape. Therefore, the correct answer highlights the necessity of the three spatial dimensions to accurately establish the volume of regular solids.