Answer:
2). Stretch before and after being active
Explanation:
Use this link:
https://www.khanacademy.org/math/algebra-home/alg-basic-eq-ineq/alg-old-school-equations/v/averages
If you mean why here you go then
The answer is A! All other options are cardiovascular exercise while A allows stretching and work of the abdomen and muscles! Hope this helps.
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