Concept:The ciliary muscle controls the curvature of the eye lens to adjust focus for near and distant objects.Explanation:To focus on a distant object, the eye requires less bending of light.So, the lens has to become thinner and flatter.This happens when the ciliary muscle relaxes.When it relaxes, the suspensory ligaments become taut and pull the lens into a thinner shape.Answer:B. relaxes and the eye lens gets thinner