Human beings are at 98.6F, which is roughly 300K. What wavelengths do we emit the most? Question 4 options:

Red

Blue

Infrared

Radio

Ultraviolet

Infrared.

Explanation:

The Infrared wavelength emitted by humans the most because of the temperature of the body. Infrared is an electromagnetic radiation having a frequency lower than visible light. The wavelength of radiation emitted depends on the temperature of the objects. Different objects emit different radiation wavelength due to their internal body temperature. Such type of radiation is known as thermal radiation. Most of the radiation emitted by human body is the infrared, having the wavelength of 12 micron.

"a.) well–developed vascular system."