How must a welder be protected during arc welding?

During arc welding, protecting the welder from electric shock is crucial due to the inherent risks associated with electric currents and the high-voltage environments created by welding equipment. Welders work with live electrical circuits, and exposure to these currents can lead to serious injuries or fatalities. Ensuring proper grounding of equipment, utilizing insulated tools, wearing dry gloves, and following safety protocols are all important aspects of shock protection. This emphasizes the importance of safety measures in welding operations, especially when dealing with electricity.

The other choices do not encompass the comprehensive safety requirements necessary for a welder. While goggles are important for protecting the eyes from intense light and flying debris, they are not sufficient on their own. Welding can occur in various environments, and working indoors is not a requirement. Additionally, the use of manual tools does not inherently relate to the protection from electrical hazards. Therefore, focusing on shock protection addresses a significant and specific risk associated with arc welding.