Question

which part of the electromagnetic spectrum is necessary for the sense of sight in humans?
radio waves
gamma rays
infrared light
visible light

Explanation:

The electromagnetic spectrum consists of various types of waves. Radio waves have long wavelengths and are used for communication. Gamma rays have very short wavelengths and high energy, often associated with nuclear processes. Infrared light is just beyond the red end of the visible spectrum and is used in thermal imaging. Visible light, on the other hand, is the part of the electromagnetic spectrum that the human eye can detect. It is this visible light that allows humans to see objects in their environment.

Answer:

Visible light.