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Cardiovascular exercise helps improve the health of the _____. a. brain b. muscle fibers c. blood vessels d. blood
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Cardiovascular exercise helps improve the health of the _____.

a. brain

b. muscle fibers

c. blood vessels

d. blood

User Assaf Shomer
by
7.2k points

1 Answer

1 vote
I believe the answer is C. blood vessels. 
User Vitae Aliquam
by
6.4k points
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