Microphone : Loud :: Microscope : ?

The answer is C. Magnify.

A microphone is a device that converts sound waves into electrical signals. A microscope is a device that makes small objects appear larger. The purpose of a microphone is to make sound louder, while the

purpose of a microscope is to make objects appear larger. Therefore, the word that best completes the analogy “Microphone : Loud :: Microscope : ?” is “Magnify.”

Option A, “Elongate,” is incorrect because a microphone does not elongate sound waves. Option B, “Investigate,” is incorrect because a microphone is not used to investigate anything. Option D, “Examine,” is incorrect because a microphone is not used to examine anything.