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A child under one year of age normally breathes at a rate per minute between 30 and:

A40
B80
C90
D60
Answer & Solution
Correct answer: D. 60
1. Respiratory rate falls steadily from birth. 2. Infants breathe far faster than adults. 3. The normal infant range tops out at 60 breaths a minute. _Source: OpenStax Anatomy and Physiology 2e, Chapter 22, The Respiratory System._
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