D. Using hands-on demonstrations.
Hands-on demonstrations are an effective way to train staff on food safety. This approach allows staff members to observe and practice proper food handling techniques in a real-world setting, which can help them retain the information better than simply reading about it or being lectured on the subject. By physically engaging with the material, staff members can gain a better understanding of the importance of food safety, and they can also ask questions and receive feedback on their technique. This can help to ensure that they are consistently following best practices and that they are well-equipped to maintain a safe and healthy food environment.