The visible spectrum of electromagnetic radiation (EMR) is between __________.

Correct option is A

Introduction
The visible spectrum of electromagnetic radiation (light) is the portion that is visible to the human eye. This range is generally accepted to be from approximately 400 nanometers (nm)} to 700 nm. Light with wavelengths shorter than 400 nm is ultraviolet (UV), and light with wavelengths longer than 700 nm is infrared (IR).
Information Booster
· Definition: The small part of the electromagnetic spectrum that is perceived by the human eye as light.
· Wavelength Range: It spans from about 400 nm (violet) to about 700 nm (red).
· Components: Within this range are the colors of the rainbow (Violet, Indigo, Blue, Green, Yellow, Orange, Red) or VIBGYOR.
· Shorter Wavelength: Wavelengths shorter than this range are ultraviolet, X-rays, and Gamma rays.
· Longer Wavelength: Wavelengths longer than this range are infrared, microwaves, and radio waves.
Additional Points
· About 400 to 750 nm: This is close but less commonly cited as the precise range; 700 nm is the conventional upper limit.
· About 400 to 580 nm: This range excludes a significant portion of the visible spectrum, specifically the yellow, orange, and red light.
· About 480 to 700 nm: This range excludes a significant portion of the shorter-wavelength visible light, namely the violet and indigo light.