Understanding Long-Sightedness (Hyperopia) Steps:

• Long-sightedness means the eye focuses images behind the retina for near objects due to short eyeball or flat cornea.
• Distant objects focus on or near the retina, allowing clear vision without aid.
• Correction uses a convex lens to converge light rays earlier, shifting the focus point forward onto the retina.
• For close objects, uncorrected image forms behind the retina, causing blur.

Why C is correct:

• Convex lenses add converging power, standard correction for hyperopia per optics principles.

Why the others are wrong:

• A: Long-sighted people see close objects less clearly than normal vision due to focus behind retina.
• B: Distant objects are seen equally clearly as normal vision, not more clearly.
• D: Close object image forms behind the retina in long-sightedness, not in front (that's myopia).

Final answer: C