Question

the ability of the lens to change its shape from flattened to round is known as accommodation inversion refraction convergence

Explanation:

Accommodation is the process by which the eye changes optical power to maintain a clear image (focus) on an object as its distance varies. Inversion refers to something being turned upside - down. Refraction is the bending of light as it passes from one medium to another. Convergence is the coming together of things. Since the question is about the lens changing its shape (a key aspect of accommodation), accommodation is the correct term.

Answer:

accommodation