Conduction is the slowest process among conduction, convection and radiation.

The correct option is A True

1. In conduction, heat is transferred from one particle to another particle of the body.
2. In convection, the actual movement of particles takes place while transferring heat therefore it is faster than conduction.
3. In radiation, there is no role of particles in transferring heat therefore it is the fastest method of transferring heat.

Thus, the statement is true.