Most appellate court judges write opinions in which they give the reasons for their decisions. these opinions are collected and published in volumes of books known as:

I believe the answer is: Reporter

The main purpose of a reporter is to help future judges in making their decision if they are facing similar case, along with explanation to the public on why a certain landmark decision that could change the constitution is being made. The appelate courts have been writing this reporters since 1816

i bought a new phone

explanation:

i will send you the money when i get back from lunch

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.