Question

which part of the eye helps focus light rays on the retina?
a. lens
b. pupil
c. sclera
d. iris

please select the best answer from the choices provided

a
b
c
d

Explanation:

Identify the function of each eye structure

• Lens: A transparent, flexible structure behind the pupil that changes shape to focus light rays directly onto the retina.
• Pupil: The adjustable opening in the center of the eye through which light enters.
• Sclera: The tough, white outer protective layer of the eyeball.
• Iris: The colored muscular ring that controls the size of the pupil opening.

Determine the correct option

• The structure responsible for actively focusing light rays onto the retina is the lens.
• This corresponds to option A.

Answer:

• (A) lens (Correct answer)
• (B) pupil
• (C) sclera
• (D) iris