Final answer:
Salmonella Typhi can be associated with the occurrence of disease among people who ate at the restaurant. Consuming raw or undercooked meat, dairy products, eggs, poultry, or meat, as well as unpasteurized milk or juice, can increase the risk of infection.
Step-by-step explanation:
The food item that can be associated with the occurrence of disease among the people that ate at the restaurant is the one which was contaminated with Salmonella Typhi. Salmonella Typhi is the causative agent of Typhoid fever, a foodborne illness that is spread through feces. Ingestion of raw or undercooked meat, dairy products, eggs, poultry, or meat, as well as unpasteurized milk or juice, can increase the risk of infection.