In which case would the kinetic energy of particles be increasing?

Question

1. Metal is cooled at 1,300°C.
2. Metal is at room temperature, 37°C
3. Metal is melted at 1,300°C
4. Metal is heated from room temperature to 200°C

Answer 1

The kinetic energy of particles would be increasing in case 4. Metal is being heated from room temperature to 200°C.