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According to the source, at roughly what point in life does the gradual physiological reduction in the body's elasticity begin?
AStarting in the early 20s
BRight at birth, immediately
COnly after age 60 or so
DDuring the teenage years
Answer & Solution
Correct answer: A. Starting in the early 20s
1. The source discusses skin and organ elasticity right after covering arteries and lungs.
2. It states that gradual physiological aging through reduction in elasticity starts in the early 20s.
3. This is much earlier than age 60 and later than birth or the teenage years, ruling out those other options.
4. This ties directly to the earlier point that young skin can tolerate large changes in body mass with little visible sag.
_Source: OpenStax College Physics (CC BY 4.0), Ch 5 "Further Applications of Newton's Laws: Friction, Drag, and Elasticity", section 5.3 Elasticity: Stress and Strain_
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