Answer:
The correct option is A
Step-by-step explanation:
Mechanical energy is a form of energy that results from the sum of kinetic and potential energy in a substance. It involves an object in motion. Example includes drawing (kinetic energy) the rope at rest (potential energy) of a generating set ( while sound energy is a form of energy that produces sound. Sound energy travels in the form of wave (sound wave).
Electrical energy involves electricity while light energy involves sound. Sincea guitar doesn't involve electricity/light, options that have electricity and light are wrong.
The strumming of a guitar strings converts potential energy in the string into kinetic energy - this is an example of mechanical energy as explained earlier while the sound produced thereafter is as a result of sound energy. This makes option A the correct option