Which of the following choroid structures regulates the shape of the lens and secretes aqueous humor?

Question

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The ciliary body contains both the ciliary muscle, which regulates the shape of the lens, and the ciliary processes, which secrete aqueous humor. The inner layer of the eye includes the retina in the posterior portion and the lens in the anterior portion. The iris contains muscles that regulate the size of the pupil according to the intensity of the light; it becomes smaller in bright light and opens wider in dim light. The sclera is a tough, fibrous lining that protects the entire eyeball lying within the orbit.

Which of the Following Choroid Structures Regulates the Shape of the Lens