Write the social security
legal provision in the constitution

Article 38 (1)- The State to promote the welfare of the people by securing and protecting as efficiently as it may a social order in which justice “social, economic and political” shall inform all institutions of national life.

answer; researchers typically cannot control people's sexual behaviors as would be necessary in an experiment;

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.