Which of the following is NOT a common health hazard associated with welding?

The correct answer is arsenic, as it is not commonly associated with welding processes. Welding can produce fumes and gases that present various health hazards, with specific metals being more prevalent. Lead and zinc, for instance, can be found in the form of coatings or electrodes used in certain welding applications. Beryllium may also be encountered in specialized welding tasks, particularly when working with specific alloys that contain it. However, arsenic does not typically arise as a health hazard in the context of welding operations, making it the least likely material to pose a risk compared to the others mentioned. Understanding the health hazards associated with welding is crucial for safety training and ensuring proper protective measures are employed.