Answer: The correct answer is option (B)
Explanation:
Telescope is an optical device which is designed to make distant object appear nearer. It contains combination of lenses and mirrors which collects the light rays and focus them as the as magnified image.
An optical telescope is a telescope which is used to gather and focus light from visible region of the electromagnetic spectrum to form a magnified image or a photograph of distant objects .This image can be seen by the observer.
Hence ,the correct answer is option(B).
