ANSWER
D. A wave is a disturbance in space and time that carries energy
EXPLANATION
We want to identify the option that best describes a wave.
A wave can be described as a disturbance in a medium that transports energy without causing a movement of particles. Waves can take the form of electric or magnetic intensity, electric potential, or temperature variations.
There are certain waves that can travel in a vacuum. These waves are called Electromagnetic waves.
Hence, the correct option is option D.
