Answer: A Visible light waves
Step-by-step explanation:
Electromagnetic wave is defined as the wave which is associated with both electrical and magnetic component associated with them. They can travel in vacuum as well and travel with the speed of light.
The Electromagnetic spectrum involves gamma rays , X rays, ultra violet rays, visible rays, infrared rays, micro waves and radio waves which are arranged in order of increasing wavelength and decreasing frequency.
Visible region consists of violet, indigo, blue, green, yellow, orange and red light and they have wavelengths which are visible to naked eyes.