Final answer:
Playing the role of 'Devil's advocate' is when a student debates from a perspective they disagree with, challenging their own beliefs to promote critical thinking.
Step-by-step explanation:
When a student volunteers to debate an issue by taking the side they personally disagree with, the situation is commonly known as playing the role of a Devil's advocate. This term describes the act of a person who presents a counterargument or takes a position opposing their own personal belief, for the sake of debate or to explore the thought process behind different viewpoints. It is a strategy often used in discussions to help uncover any potential flaws or weaknesses in arguments and to encourage critical thinking.