Final answer:
A cochlear implant is a device that restores hearing in individuals with nonfunctional .It converts sound into electrical impulses and stimulates the auditory nerve to transmit information to the brain. Cochlear implants cannot restore hearing loss resulting from damage to the bones of the middle ear. option a is correct.
Step-by-step explanation:
A cochlear implant is a device that can restore hearing in individuals with nonfunctional .It consists of an external microphone, speech processor, and transmitter, as well as internal components like a receiver and electrode array. The implant works by converting sound into electrical impulses and stimulating the auditory nerve, allowing the brain to interpret the impulses as sound.
A cochlear implant is not able to restore hearing loss resulting from damage to the bones of the middle ear. This type of hearing loss, known as conductive hearing loss, occurs when there is a failure in the vibration of the eardrum and/or movement of the ossicles. Cochlear implants are most effective for sensorineural hearing loss, which is caused by problems transmitting neural signals from the cochlea to the brain.