An AP course differs from a dual enrollment course in which of the following
ways?

A. A test must be passed with a high score to receive college credit
for a dual enrollment class.

B. Students will save on tuition if they take dual enrollment courses.

C. A test must be passed with a high score to receive college credit
for the AP course.

D. Students will save on tuition if they take AP courses.

Option A: A test must be passed with a high score to receive college credit for the AP course.

Explanation:

AP courses are generally recognized as being the equivalent of undergraduate college courses. Dual enrollment courses earn the student both high school and college credit. The difference is that an exam is required in the AP course, but in a dual enrollment course, the student only needs to achieve a passing grade. Advanced Placement is a high school class that is designed to be equivalent to a college course. The workload is more demanding than the typical high school class. Dual enrollment courses are taught at high schools generally by college professors.

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.