Answer the following question given this paragraph: 

When light rays converge behind a lens, a real image is formed. Real images are useful in that you can place photographic film at the physical location of the real image, expose the film to the light, and make a two-dimensional representation of the world, a photograph.


Q: What can be formed by converging light rays behind a lens, onto a piece of film?

 Choices:

- a prism

- a kaleidoscope

- a mirror

- a photograph

A:
a photograph
