Which of the following is not a benefit of flexibility?

“It improves your muscles stronger” is not a benefit of improved flexibility.

Explanation:

The flexibility tends to increase the muscle flexibility with actin filament and tendon to exceed the limit of stretch and to return to its original position which leads to the growth of filaments. With the growth of filaments, muscles grow.

And with the growth of muscles in an area, makes the muscles be strong. And hence, the flexibility improvements lets not the muscle be stronger. This let to increase the joint movement too and secures from getting the injury by increasing range of motion.

answer:

d. because dr. laguardia selected a widely used measure, his study generalizes to has strong external validity. external validity has limited external validity. other applications of this measure.

the widely used measure that he applied to his experiment was the benton facial recognition test. it employed on to football players and as result, only players who suffered brain concussions did not pas this test. and although it has an external validity, it is limited because it isn't general to apply to other population.