in which direction of the wave motion do longitudinal waves transfer energy?\nperpendicular\nparallel\nclose\…

Brief Explanations:

Longitudinal waves transfer energy in the direction parallel to the wave motion. In contrast, transverse waves transfer energy perpendicular to the wave motion. The terms "close" and "equal" are not relevant in this context for describing the direction of energy - transfer in waves.

Answer:

B. parallel