The Gulf War was resolved when .

Iraq retreated from Kuwait

Explanation: (2 august 1990 - 28 february 1991).

What did Operation Desert Sabre achieve? Succeeded in liberating Kuwait and defeated the Iraqi Republican Guard in southeastern Iraq. When and how did the Persian Gulf War end? Bush declared a ceasefire on February 28, ending the Persian Gulf War.

Explanation:

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.