What personal protective equipment (PPE) must boilermakers always wear on the job?

The correct answer emphasizes the essential role of personal protective equipment (PPE) in ensuring the safety and well-being of boilermakers while they work. Hard hats are crucial for protecting the head from falling objects and impacts, which is vital in construction and industrial environments where overhead hazards may be present. Goggles are equally important as they protect the eyes from debris, sparks, or harmful substances that might be encountered during activities such as welding or cutting.

This choice reflects a comprehensive understanding of the specific hazards boilermakers face daily and the fundamental safety measures that must be followed. While other options may include items that could be beneficial in certain contexts, they do not encompass the standard and necessary protective equipment that directly addresses the most pressing risks associated with boilermaking tasks.