the answer should be: The study's construct validity
A study's construct validity refers to the degree to which the experiments made in the study actually measures what it intended to measure. This can be seen on the study's standard of measurement and the correlation between variables used in the measurement and the actual phenomenon.
After hearing the claimed made by the teacher, Clarissa's immediately question whether the act of bullying can be measured.
She brought up an important point. The teacher never really specify what act considered as 'bullying'. Depending on people's perception, some consider a slight discomfort from social interaction might be considered as bullying, while other people might have the threshold. Because of this, she can say that the study's construct validity is questionable.
William Magear "boss" Tweed is a corrupt representative who defrauds millions of dollars from New Yorkers. He and his peers in the Democratic Party in New York exploit their power in the government for personal gain. As a civil reformer and a cartoonist, Thomas Nast portrays William Tweed as a vulture who preys on New Yorkers.
The automobile engine is the largest source of **<span>carbon monoxide**</span> gas.
Before WWII Germany was granted some of their wants, and this was called appeasement. Appeasement was done because the Allies thought that if they gave in to some of their demands, it would keep Germany from doing anything major, such as war. The biggest concession was to allow Germany to take over the Sudetenland, which was in Czechoslovakia but inhabited by native German speakers that wanted to be allied with Hitler.