Which of the following is a method to protect against falling objects?

Toe boards are an effective method to protect against falling objects in a work environment. They are typically installed along the edges of elevated surfaces, such as scaffolds and platforms, to prevent tools, materials, and other items from rolling or falling off. By using toe boards, the risk of injury from falling debris is significantly reduced, creating a safer work environment for all personnel in the vicinity.

While personal protective equipment, reflective vests, and safety goggles are important for various safety considerations, they do not specifically address the risk of falling objects in the same way that toe boards do. Personal protective equipment can include hard hats that protect from head injuries, reflective vests enhance visibility but do not mitigate the risk of falling objects, and safety goggles protect the eyes from particulates but are not designed to prevent impact from falling materials. Therefore, toe boards stand out as the focused method of safeguarding against this particular hazard.