1. safety glasses with a(n) welds always use safety glasses with a(n) __ a. flame -retardant coating b. air-supplied respirator C.full face shield or a helmet d. OSHA -approved dust mask

## Step 1<br />This problem is about safety measures when welding. Welding involves the use of high temperatures and intense light, which can cause severe eye injuries. Therefore, it is crucial to wear safety glasses to protect the eyes.<br />## Step 2<br />The options provided are different types of safety equipment. The correct answer is the one that best protects the eyes during welding.<br />## Step 3<br />Option a, a flame-retardant coating, is not suitable for eye protection. It is more relevant to materials that can catch fire.<br />## Step 4<br />Option b, an air-supplied respirator, is used to protect the respiratory system, not the eyes.<br />## Step 5<br />Option d, an OSHA-approved dust mask, is also used to protect the respiratory system, not the eyes.<br />## Step 6<br />Option c, a full face shield or a helmet, is the correct answer. This is because it provides the most comprehensive protection for the eyes during welding.