Which is the BEST statement about joint flexibility? A. It is constant for any joint type.
B. It is constant within a family.
C. It is consistent between an individual's joints.
D. It varies from joint to joint.
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The talk test measures ease of speaking during exercise;

(a) is not correct because one does not get increased cholesterol  from lifting weights.(b) is not correct because lifting weights cannot reduce the risk of a hereditary disease.(c) is not correct because back pain isn't a benefit! and plus, if he lifts weights properly, he should not have back pain.(d) is the correct answer because his ligaments will gain mass, making it easier for him to carry heavier weights and he will also be stronger!

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Answer(c); risk being sued for negligence;