The students who wrote the question marks on the whiteboard during the documentary titled, "Broke, Busted, and Disgusted" were actually venting their frustrations.
The documentary is directed by Calvin Johannesen, and it explores the question of American students, the current astronomical costs of education, and student loan debts, which are running into trillions of dollars.
Thus, student loan debts have created what some people have described as a "boomerang generation" because the students, after living free of their parents, are forced to return and live with them when they discover they are unable to repay their student loan debts.
Read more about the crisis of student loan debts in America today at https://brainly.com/question/12450638