Final answer:
The correct safety equipment when using Jack Hammers and Chipping guns is Ear protection, due to the high noise levels these tools produce, which can cause hearing damage.
Step-by-step explanation:
When using tools like Jack Hammers and Chipping guns, it's paramount to prioritize safety. Among the provided options, the most appropriate choice would be D) Ear protection. These tools generate a significant amount of noise, which can potentially cause hearing damage or loss over time without adequate ear protection. While using leather gloves might protect your hands, and rubber gloves might offer grip and some electric insulation, they do not address the risk of hearing damage. Using bare hands is the least safe option and should be avoided to prevent a variety of hazards including vibration and abrasion injuries. Furthermore, it is important to also consider additional protective equipment such as safety goggles and helmets depending on the task at hand. Always follow safety instructions and guidelines when operating such equipment to minimize risks associated with their use.