Concept:The ability of the human eye to adjust its lens shape in order to focus images clearly on the retina.
Explanation:The lens of the eye changes its curvature to focus light from objects at different distances.
The ciliary muscles control this change in the shape of the lens.
When viewing nearby objects, the lens becomes thicker and more curved.
When viewing distant objects, the lens becomes thinner and flatter.
This automatic adjustment ensures a sharp image is always formed on the retina.
The scientific name for this adjustment ability of the eye is accommodation.
Answer:D. accommodation