Studies of healthy people indicate that functioning of the human body remains essentially constant until
A) age 40.
B) after age 50.
C) after age 70.
D) after age 60.

Question

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The Answer of Studies of healthy people indicate that functioning of the human body remains essentially constant until
A) age 40.
B) after age 50.
C) after age 70.
D) after age 60.

Studies of Healthy People Indicate That Functioning of the Human