A mechanical wave is a wave that ___ it's energy

Transmits it's energy I think. Like sound waves, that's an example of how it can transmit its energy. It requires a medium to do so.

A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. While waves can move over long distances, the movement of the medium of transmission-the material-is limited. Therefore, oscillating material does not move far from its initial equilibrium position. Mechanical waves transport energy.