Answer:I would say A or C
Explanation:
The Crusades
These were a series of military campaigns by western Europe Christians in the high middle ages. the purpose was to liberate the holy land from Muslim occupation and rule.
I believe the answer is: D. <span> Skinner; operant
According to skinner, operant conditioning refers to the attempt to make a subject to display desired beahvior by using rewards and punishment.
In the scenario above, completing the homework is the desired behavior and letting her choose the movie is the reward.</span>