Answer the following question given this paragraph: 

Mirrors and lenses are used in optical instruments to reflect or refract light. Optical instruments include microscopes, telescopes, cameras, and lasers.


Q: What two things are used in optical instruments to reflect or refract light?

 Choices:

- orientations and lenses

- mirrors and magnifiers

- prisms and microscopes

- mirrors and lenses

A:
mirrors and lenses
