how does a refracting telescope work?

A it uses to concave lenses together and focus light
B it uses a concave lens, a convex lens, and a concave mirror together and focus light
C it uses to convex lenses together and focus light
D it uses a concave lens and a convex lens together and focus light

D it uses a concave lens and a convex lens together and focus light

Refraction telescopes work by bending light using a combination of lenses to focus incoming light rays and create an image. The concave lens helps to bend the light rays outward, while the convex lens helps to bring the rays back together to form an image.