Answer:

ʙ. ᴇɴᴇʀɢʏ

Explanation:

A wave can be thought of as a disturbance or oscillation that travels through space-time, accompanied by a transfer of energy. The direction a wave propagates is perpendicular to the direction it oscillates for transverse waves. A wave does not move mass in the direction of propagation; it transfers energy.

H͟O͟P͟E͟ I͟Y͟ H͟E͟L͟P͟S͟

P͟A͟ B͟R͟A͟I͟N͟L͟I͟E͟S͟T͟

K͟E͟E͟P͟ O͟N͟ L͟E͟A͟R͟N͟I͟N͟G͟