I got b for this answer because if she smokes and coughing she is closer to a bigger illness then death. Hope this helps
Both a and b, you wouldn't want to be driving in the dark would you?
A. better posture: <span>is not a physiological benefit of excercising.</span>
b. decreased risk of anxiety: is a physiological benefit of excercising.
c. improved sleep quality: is a physiological benefit of excercising.
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d. more confidence: </span>is a physiological benefit of excercising.
But, the main physiological benefit of excercising is b. decreased risk of anxiety, because the neurotransmitters released during and after exercising may help people who suffer from anxiety to subside.