Which of the following quotes best encompasses a central idea of the study's findings?
"within a very short time both guards and prisoners were settling into their new
roles" (paragraph 10)
b "as the prisoners became more submissive, the guards became more aggressive
and assertive" (paragraph 16)
the roles that people play can shape their behavior and attitudes" (paragraph
19)
"many said they hadnt known this side of them existed or that they were
capable of such things"(paragraph 21)