Final answer:
In the kitchen, the only approved jewelry is a plain band ring. This is due to food safety regulations that aim to minimize contamination risks.
Step-by-step explanation:
The only kind of jewelry that is approved in the kitchen according to health and safety regulations is a plain band ring such as a wedding band. Jewelry items like bracelets, earrings, and necklaces are not typically allowed because they can harbor bacteria and present a physical contamination risk if they fall into food. Earrings are typically small and don't pose a safety risk while working in the kitchen. Rings, bracelets, and necklaces can increase the risk of contamination or accidents while preparing food. The primary concern is to maintain food safety and prevent any potential contamination in food preparation areas.