Final answer:
Humans can see the part of the electromagnetic spectrum known as visible light, which ranges from 380 nm to 740 nm in wavelength. (option A)
Step-by-step explanation:
The part of the electromagnetic spectrum that humans can see is known as visible light. This is a small portion of the larger electromagnetic spectrum which also includes other types of waves such as radio waves, gamma rays, x-rays, ultraviolet light, infrared light, and microwaves.
The visible light spectrum for humans ranges from wavelengths of approximately 380 nanometers (nm) to 740 nanometers. Beyond the scope of human vision, other species can detect different parts of the spectrum; for example, bees can see ultraviolet light and some snakes can detect infrared radiation.