Why does tris run out the door naked?

In "Divergent" by Veronica Roth, Tris runs out the door naked as a part of the Dauntless initiation ritual. This act symbolizes her willingness to embrace bravery and defy societal norms. It also serves as a moment of vulnerability, showcasing her determination to prove herself among her peers. This bold move is a crucial step in her transformation and acceptance into the Dauntless faction.