You see a door labeled "Exit." Because exits must be clearly identified, you know that this door leads to a:

Answer
An exit door by definition and standard safety regulations (such as OSHA and building codes) is meant to provide a continuous and unobstructed path of travel to a safe area outside of a building. Therefore, an exit leads to a place of safety outside. The other options such as a basement, bathroom, or fire extinguisher do not define an exit.