Answer:
Energy is transferred when one molecule collides with another.
Step-by-step explanation:
There are 3 processes of heat transfer. They are as follows:
- Conduction
- Convection
- Radiation
Conduction is the process of transfer of energy through collisions between neighboring atoms or molecules. When two bodies are in direct contact with each other, the process of conduction occurs.
Hence, the correct option is (A) "Energy is transferred when one molecule collides with another".