4. Safety glasses with olde shlelds should be worn with __ for additional eye protection. square A. sunglasses square B. welding helmet square C. shaded lens D. ear plugs

## Step 1<br />This problem is about safety measures in a workshop or lab setting. The question is asking what should be worn in addition to safety glasses with old shields for extra eye protection. The options provided are sunglasses, a welding helmet, shaded lens, and ear plugs.<br /><br />## Step 2<br />Sunglasses and shaded lenses are primarily used to protect the eyes from UV rays and bright sunlight, not necessarily for additional protection in a workshop or lab setting.<br /><br />## Step 3<br />Ear plugs are used to protect the ears from loud noises, not the eyes.<br /><br />## Step 4<br />A welding helmet, on the other hand, is specifically designed to protect the eyes and face from sparks, intense light, and heat that can occur during welding. Therefore, it would provide additional eye protection in a workshop or lab setting.