Answer:
c. why; where
Step-by-step explanation:
Observing aggression in daycare while picking his daughter from school, Bandura began to study the pattern of aggression at the daycare center for one month to find out the possible triggers for the aggression and why it existed in the daycare
This research type answered WHY because the researcher is trying to determine the nature of aggression and its origin and why it occurred at the daycare and the study described the WHERE because it clearly described the location of the research which was the daycare.
So the research type answered the WHY and the study answered WHERE.