Answer: concave (diverging) lens.
- A concave (diverging) lens
- B convex (converging) lens
- C cylindrical lens
- D plane mirror
Correct answer: A. concave (diverging) lens
Explanation: A concave lens diverges rays so the image forms on the retina, correcting myopia.

Concave mirror ray construction: a ray parallel to the axis reflects through F, and a ray through F reflects parallel, locating the inverted real image. Image: Maxmath12, CC0, via Wikimedia Commons.
Concept context
Reflection, refraction, lenses, mirrors, total internal reflection.