Which of the following tools is essential for protecting the hands of a welder?

Welding gloves are essential for protecting the hands of a welder due to the specific hazards associated with welding tasks. These gloves are designed to be heat-resistant and provide protection from sparks, molten metal, and other potential injuries that can occur during the welding process. Quality welding gloves not only safeguard against burns but also offer a good grip and dexterity, which are crucial when handling welding equipment and materials.

In the context of the other options, while a welding helmet is vital for protecting the face and eyes from harmful UV rays and bright arcs produced during welding, it does not offer any hand protection. Wire strippers are specialized tools used for electrical work and are not relevant in the context of welding safety. Similarly, a wood chisel is a tool for cutting wood and has no use in welding activities. The need for welding gloves is specific to ensuring the safety and well-being of the welder's hands, making them the correct answer in this scenario.