Which optical instrument uses a large concave mirror, a plane mirror, and a convex lens to gather light, focus, and enlarge an image? a. refracting telescope b. microscope c. reflecting telescope d. film camera

The correct answer is: C. reflecting telescope

Explanation:

The reflecting telescope was invented in the 17th century by Isaac Newton. It was used as a replacement to the refracting telescope which, in comparison,  had some defects. The reflecting telescope uses various differently curved mirrors to gather light and thus create an image.