What will you do if you see someone littering on public places?

answer:

of course, tell them to stop and if they don't call the cops

Explanation:

because littering is agents the law, and rude to the environment.

answer:Say something, or pick it up

Explanation:because its the right thing to do

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.