A wedge is a modification of which simple machine?

A wedge is indeed a modification of the inclined plane. This relationship stems from the fundamental design of a wedge, which consists of two inclined planes joined together, forming a sharp edge. This shape allows the wedge to convert a force applied at the thicker end into a perpendicular force exerted at the sharp edge, effectively splitting or lifting objects apart.

The inclined plane's primary function is to reduce the amount of force needed to lift an object by providing a gradual slope. Similarly, the wedge utilizes this principle by allowing a force to be applied in a direction that is effective for separating or lifting materials. In this way, both the inclined plane and the wedge allow for the efficient application of force in mechanical tasks.

The other options represent different simple machines, each with unique mechanisms and use cases, but they do not share the same foundational design principles that connect the wedge directly to the inclined plane.