Explain how the human eye focuses light.
A. The human eye has a lens. This lens is set to one focus length which focuses light. This is why somethings can appear blurry if they are far away.
B. The human eye has a lens. This lens is controlled by muscles around it which tell it how to focus the light.
C. The human eye turns light into electrical signals. Then the brain focuses these electrical signals.
D. The human eye is a lens. All light that enters it is focused by the eyelids.