Which command will create a solid body between multiple cross-section sketches?

The correct command to create a solid body between multiple cross-section sketches is Loft. The Loft command is specifically designed to generate a 3D solid by connecting different sketches arranged in various planes, allowing for smooth transitions between shapes. It works by interpolating between the defined cross-sections, creating a complex shape that captures the characteristics of each cross-section.

In contrast, the Extrude command typically extends a single 2D profile along a straight path to form a solid. This is ideal for simpler shapes but does not allow for the creation of solids that transition between multiple profiles. Similarly, the Revolve command generates a solid by rotating a 2D profile around an axis, which is also limited to single profiles rather than multiple, varying cross-sections. The Sweep command involves moving a 2D shape along a path but again focuses on a single profile to create solids, making it less suitable for the case of multiple cross-section sketches.

Loft stands out as the most versatile option for creating solids that require smooth transitions across various different sketches, hence its classification as the correct choice.