Answer:
C. energy transmitted by an electromagnetic wave
Step-by-step explanation:
Radiant energy is defines as the energy of gravitational and electromagnetic radiation.
The energy is transmitted by electromagnetic waves in a synchronized oscillations of magnetic fields and electric field. Different types of electromagnetic waves have different wavelengths, frequencies, and power and all interact with matter differently. Different types of radiant energy include micro waves, visible light,radio waves, infrared radiation, X-rays, ultraviolet radiation and gamma rays.
Radiant energy can travel through space and do not require any medium. Example of radiant energy is heat recieved from the sun by the earth travelled through a vacuum by electromagnetic waves.
Hence, the correct option is C.