What must be used to protect the eyes and face during activities that produce UV or infrared light?

The correct answer focuses on the need for appropriate protection during activities that generate UV or infrared light. Non-reflective helmets that are free of cracks are designed to provide a higher level of safety compared to regular eyewear. These helmets are constructed to block harmful radiation that can penetrate standard sunglasses or safety glasses, which may not be specifically designed for this purpose.

While glasses without lenses, regular sunglasses, and clear safety glasses may provide some level of eye protection, they do not offer the full protection needed against UV or infrared light exposure. Regular sunglasses, for instance, might block visible light but may not adequately filter out the damaging UV rays. Clear safety glasses, meanwhile, lack the reflective properties that help in minimizing glare and harmful effects from infrared radiation.

Using non-reflective helmets ensures comprehensive coverage and defense against the potential hazards posed during these high-risk activities, safeguarding the face and eyes from the harmful effects of radiant energy.