What was one way in which the Cherokee Indians attempted to keep their lands? A. They received financial assistance from the French.

B. They fought wars to keep control.

C. They built gigantic walls to protect their lands.

D. They adapted many qualities of the Americans.

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.

answer; ///any two strangers are likely to share many coincidental similarities;

answer; the intervening variable;