The beginning of the inner ear is marked by the:
A) tympanic membrane.
B) oval window.
C) eustachian tube.
D) inner ear.
B
Explanation: A) The tympanic membrane separates the external ear from the middle ear.
B) Correct
C) The eustachian tube lies between the middle ear and the throat.
D) The inner ear is connected at the end of the middle ear.
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