Final answer:A cochlear implant includes an external microphone and speech processor, a receiver-stimulator, and an electrode array, but not a tympanic membrane, which is a part of the natural ear. Therefore the correct answer is D).Explanation:It consists of several components, such as an external microphone and speech processor that pick up sounds and select speech frequencies, a receiver-stimulator that receives signals from the external components and converts them into electrical impulses, and an electrode array that directly stimulates the auditory nerve to send information to the brain.However, a cochlear implant does not include a tympanic membrane, which is a natural part of the ear that vibrates in response to sound waves, not a component of the cochlear implant.It can be an option for people who have severe hearing loss from inner-ear damage who are not able to hear well with hearing aids. Unlike hearing aids, which amplify sound, a cochlear implant bypasses damaged portions of the ear to deliver sound signals to the hearing (auditory) nerve....

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