Which heat transfer mechanism requires molecules to actually touch each other? radiation, conduction ,convection ,none of these

Option (b) is the correct answer.

Explanation:

This process is known as conduction.

For example, a metal spoon placed in hot coffee cup then heat will flow from coffee to the cup.

For example, boiling water represents convection process.

For example, heating of a metal plate placed in the sunlight.

Thus, we can conclude that conduction is the heat transfer mechanism which requires molecules to actually touch each other.

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves