Acontested election means that the losing candidate calls for
a. primary press conference recount caucus

A contested election means that the losing candidate calls for caucus. Since election also entails transparency, the losing candidate has every right to ask for a caucus, meaning, a group of people meeting to discuss a particular issue or to work together for a shared political goal.

what is the other part to the question

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.