Final answer:
Food workers sick with a transmissible illness should be at home to prevent the spread of foodborne diseases and to ensure food safety.
Step-by-step explanation:
Food workers sick with an illness that can be transmitted by contact with food or through food should be: A. At home. Ensuring food safety is critical in both restaurant and home settings, and sick food workers pose a significant risk of transmitting foodborne illnesses to others through the food they handle. Prevention of foodborne disease depends mainly on good food safety practices, such as keeping ill workers out of food handling environments, regular handwashing, maintaining proper food storage temperatures, and avoiding cross-contamination between foods.