Accommodation for distant vision Steps:

• Distant objects produce nearly parallel light rays entering the eye.
• To focus on the retina, the lens must flatten (thin) for less convergence.
• Ciliary muscles relax to release tension on the lens.
• Suspensory ligaments then pull the lens edges, keeping them under tension.

Why D is correct:

• In distant vision, ciliary muscles relax (not contracted), thinning the lens while suspensory ligaments remain under tension to maintain the flat shape (per accommodation mechanism).

Why the others are wrong:

• A: Lens is thin (not thick) for distance; muscles relax (not contract).
• B: Ligaments are under tension (not slack) to flatten the lens.
• C: Muscles relax (not contract) for distant focus.

Final answer: D