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B. Spinal nerves I think, it makes most sense to me.
The name that is given to the loudness of a voice that is determined by the amount of air you push past the vocal folds in your throat, is called volume.
<h3>What is Volume?</h3>
This refers to the loudness or low sound that is produced either by a person or an electronic device.
Hence, we can note that in the case of humans, there is the use of the vocal folds that are found in the throat to produce a sound which is then used to communicate and the high or low pitch is known as volume.
Read more about voice volumes here:
brainly.com/question/2059535
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