What is it cause Idk what it is I need help

Answer:
visible light is the small portion of the electromagnetic spectrum
Answer:
It would be answer A
Explanation:
It would be: Visible Light is a small portion of the electromagnetic spectrum, because it only takes up the ROYGBIV colors we can see, things such as micro waves, gamma waves, X rays, Infrared, Ultraviolet, and other waves would not be visible.