Energy is a form of energy caused by the vibration of matter within a solid, liquid, or gas.

a. light
b. sound
c. chemical

B

Explanation:

Sound energy is caused by vibrations. Think of a speaker. An electromagnet changes it's current very quickly, due to electrons moving up and down within the attenna. This, the electromagnet is always changing poles. A magnet is inside the electromagnet coil, and attracts/repels from both sides due to the sudden changes. Thus, the magnet vibrates, letting off sound waves.

This is how you can also make a radio with only a coil of wire (electromagnet) and a permanent magnet, along with a larger object to amplify the sound.

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.