What type of tool is used to prepare wood for finishing and includes a handle, knob, frame, sole, and a mouth?

The tool used to prepare wood for finishing that includes components such as a handle, knob, frame, sole, and a mouth is a plane. A plane is designed to smooth or shape wood by shaving off thin layers of material, which ultimately helps achieve a flat surface or a specific contour. The handle and knob allow the user to push and control the tool with precision, while the sole is the bottom surface that rests against the wood, and the mouth is the opening where the blade emerges to cut the wood fibers.

In contrast, chisels are primarily used for carving or cutting into wood and do not have a sole or mouth as a plane does. Saws are intended for cutting wood to length or creating shapes and do not perform the smoothing function that a plane does. Files are typically used for smoothing and shaping metal, as well as other materials, but are not suited for preparing wood surfaces. Thus, a plane is uniquely suited for finishing wood, making it the correct answer.