Answer:
C
Explanation:
94 percent of americans evey yearare organ donors
The best and most correct answer among the choices provided by the question is the first choice "flu"
The flu<span> is an acute respiratory illness caused by </span>influenza<span> viruses A or B . Most people who get the </span>flu<span> recover completely in 1 to 2 weeks, but some people develop serious and potentially life-threatening medical complications, such as pneumonia.</span>
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Musculoskeletal System. When the body is stressed, muscles tense up. Muscle tension is almost a reflex reaction to stress — the body's way of guarding against injury and pain. With sudden onset stress, the muscles tense up all at once, and then release their tension when the stress passes.
Primarily means for the most part, so it means This type of physical fitness is mostly influenced by an individual's exercise habits.
<span>because they can accelerate heart rate, increase muscle tension, elevate blood pressure</span>