Final answer:
If "Z87+" is stamped on a pair of safety glasses, it means that the glasses meet the requirements set by the American National Standards Institute (ANSI) for eye protection. The Z87+ stamp indicates that the glasses provide high-impact protection.
Step-by-step explanation:
If "Z87+" is stamped on a pair of safety glasses, it means that the glasses meet the requirements set by the American National Standards Institute (ANSI) for eye protection. The Z87+ stamp indicates that the glasses provide high-impact protection, meaning they can withstand the impact of objects traveling at high speeds without shattering or breaking. This is important for individuals who work in environments where there is a risk of flying debris or projectiles, such as construction sites or laboratories.