which-of-the-following-best-demonstrates-the-sensitivity-of-human-vision-under-o

Question

Which of the following best demonstrates the sensitivity of human vision under optimal conditions?

Accepted Answer

Humans can differentiate between shades of black and white under very low light.

Answer

Humans can read fine print from 100 feet away.

Answer

Humans can perceive the light of a flashlight pointed towards the sky from 50 miles away.

Answer

Humans can see the light from a lighthouse 100 miles away on a clear night.