A.Short waves

B.Long waves

C.Particles

D.None of these

Ans: A.Short waves 

Exp: Radiant energy is the energy of electromagnetic waves. It is a form of energy that can travel through space. For example, we receive the heat from the sun, which is located very far from the earth via radiation. The sun’s heat is not transmitted through any solid medium, but through a vacuum. They are short waves.