Why is a social rule necessary​

Explanation:

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Social rules are the behaviors that are considered acceptable in a group or society. Social rules lead to a smooth social interaction that allows us to acquire friends and avoid conflicts. Social rules also demand that the person should give high preference to social interest than his/her personal interest.

Explanation:

check on the internet

answer; the population in brazil is very diverse there are many races and ethnic groups

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.