What is characteristic of both sound waves and

electromagnetic waves?

(1) They require a medium.

(2) They transfer energy.

(3) They are mechanical waves.

(4) They are longitudinal waves.

The characteristic of both sound waves and electromagnetic waves are:

(2) They transfer energy.

Explanation:

A wave may be a longitudinal wave whereas, magnetic force waves are transverse waves. Sound may be a mechanical vibration that passes through a medium like gas, liquid or solid to become a sound. Whereas, Electromagnetic waves, additionally called EM wave, is that the travel path of electromagnetic wave or EMR.

"(2) They transfer energy" is the best option from the list regarding the characteristics of both sound waves and electromagnetic waves, but these energies are different.