A high school class is discussing the United States economic system. One student thinks of the financial success of their parents, and proclaims, "our system is great at making people rich." A second student, whose parent is working multiple jobs responds "our system makes it hard for people to get ahead." In our class we discussed the idea that the way we understand a system is impacted by our experiences and the lens through which we view the world. This is characterized as what?

a. Emotions
b. Opinion
c. Perspective
d. Choice