D: supply
Demand
Fjeiejekeje
I believe the answer is: Field research
Field research refers to a form of research which data is accumulated from other places outside our work-room or laboratories. What considered as 'outside' places would be varied depending on the discipline that being studied. For social studies, environment outside the place where the researchers accustomed to would be considered as outside environment.
Now, any player who receives TWO personal fouls in a single game will be ejected.
I believe the answer is : D ) All answers given are correct.