Dr. White noticed something odd happening to the behavior of his students as midterm exams neared. He decided to take notes about this behavior to find out exactly what was happening and the circumstances surrounding the behavior. His goal is clearly

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Explanation:

Dr. White noticed something odd happening to the behavior of his students as midterm exams neared. He decided to take notes about this behavior to find out exactly what was happening and the circumstances surrounding the behavior. His goal is clearly  description.

The goal of Dr. White is to describe the phenomenon going on with his students.

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.

those sounds of the natural world are bioacoustics, and they're more than a false-color spectrogram of data from the musiamunat conservation area.