In which part of the ear are sound waves amplified?
Middle ear
Explanation for the correct option:
Option B: Middle ear.
Explanation for the incorrect options:
Option A: Cochlea.
The cochlea is part of the inner ear that is useful for converting sound waves to electrical signals which are sent to the brain.
Option C: Outer ear.
The outer ear collects the sound waves from outside.
Option D: Inner ear.
Hence, option (B) is the correct answer.