Which of the following is NOT an approved hair restraint?

The correct choice is the option that identifies hair spray as not being an approved hair restraint. Hair spray, while it can help keep hair in place, does not physically restrain hair from falling into food or onto surfaces where food is prepared or served. Effective hair restraints must keep hair securely back and prevent any strands from coming loose, which is essential for maintaining hygiene in food service.

In contrast, the other options, such as chef hats, baseball caps, and hair nets, are designed specifically to cover and secure hair. Chef hats and hair nets completely enclose the hair, providing a barrier that prevents hair from contaminating food. Baseball caps can also serve as a basic form of hair restraint, as they keep the hair contained and less likely to fall into food. The key difference is that hair spray lacks the physical coverage and containment necessary to be considered an effective hair restraint in a food safety context.