The malleus, incus, and stapes bones pick up vibrations of the and transmit these vibrations to specialized hearing cells in the inner ear.
a) eustachian tube
b) tympanic membrane
c) external auditory meatus
d) cochlea

B) tympanic membrane

Explanation:

Tympanic membrane

It is also called the eardrum . It is a layer of the  tissue present in the ear of the human , which is responsible for receiving vibrations of sound from the outer air and transmit them to auditory ossicles ,

It is also responsible for serving as the lateral wall of the tympanic cavity , which separates it from the external auditory canal .

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