Question

most objects emit infrared energy.
how do humans recognize this?
○ their vision becomes clearer.
○ they experience \goose bumps\ on their skin.
○ their skin senses it as warmth.
○ they see light emitted from the object.

Explanation:

Infrared energy is a form of thermal radiation, meaning it carries heat. Human eyes cannot detect infrared wavelengths, so vision-based options are incorrect. Goose bumps are a response to cold or emotional triggers, not infrared energy. The skin has temperature receptors that pick up the heat from infrared radiation, perceiving it as warmth.

Answer:

Their skin senses it as warmth.