I WILL GIVE BRAINLIEST

Which two U. S. leaders have the most influence over foreign policy?

Select one:

a. The president and the vice-president

b. The commander-in-chief and the speaker of the house

c. The leader of the armed forces and the secretary of state

d. The president and the secretary of defense

it is a bolivia your welcome

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.