Ontario Office of the Fire Marshal (OFM) Firefighter I Certification Practice Exam 2025 - Free Firefighter I Certification Practice Questions and Study Guide

The correct answer is a push bar, which is a common mechanism used to secure and operate a projecting window. A push bar provides a simple and effective means for opening and closing the window, often allowing for easy access to ventilation while also ensuring that the window remains securely in place when closed. This functionality is particularly important in scenarios where fire or smoke may necessitate quick access to fresh air or in managing heat during firefighting operations.

The use of a push bar also means that the window can be opened with a straightforward push or pull, which can be vital in emergency situations where time is essential. Other mechanisms, such as slide tracks or spring latches, may pertain to different types of windows but do not accurately describe the operational method for a projecting window. A counterweight could also be relevant in some window designs but does not define how the window is held in place in typical circumstances.