Which of the following instruments is designed for cleaning enamel surfaces during cavity preparations?

The enamel hoe is specifically designed for cleaning and shaping enamel surfaces during cavity preparation procedures in dentistry. It has a blade that is typically angled and is used to remove debris and smooth the enamel to ensure proper adhesion of restorative materials. The unique design of the enamel hoe allows for effective scraping and cleaning along the enamel surfaces, making it an essential tool during the restorative dentistry process when preparing cavities for fillings or other restorations.

Other instruments mentioned, such as the shepherd’s hook, serve different purposes, such as detecting caries or exploring occlusal surfaces, and are not primarily used for cleaning. Cotton forceps are designed for handling cotton and gauze, while the hollow handle is usually part of instrument setups that hold various types of working ends but does not have a specific function in cleaning enamel itself. Therefore, the enamel hoe is the most appropriate choice for the task of cleaning enamel surfaces during cavity preparations.