do you think current goverment is exercising properly the power bestowed upon it by the constitution? Explain your answer and give current examples

the correct answer on edgen is:

(c.) prevent the spread of communism.

i just took the test.

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.