Im pretty sure that A. is the correct answer
A cochlear device is a device that is made up of an internal part and other external parts. The external part is a microphone that receives the sound and converts it (option A)
<h3>What is a cochlear implant?</h3>
A cochlear implant is a term that refers to a small electronic device used to help people who are hard of hearing, hear clearly.
This device is a medical innovation that has several variations. However, the most common is composed of two essential elements that are:
- A stimulator or receiver that is surgically implanted within the temporal bone that surrounds the ear. This has the function of receiving sound, decoding it and sending an electrical signal to the brain.
- An external device or receiver, a speech processor, and an antenna. This part of the device receives the sound, converts it into an electrical signal, and sends it to the inside of the cochlear implant.
Learn more about cochlear implant in: brainly.com/question/2463964
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Question:
If x = 2, y = 3 and z = -5, then x^2 + y^2 +2z = ?
Answer:
Explanation:
Given
Required
Determine 
Substitute values for x, y and z in the above expression:
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