Question

what is the most contagious foodborne illness that spreads in schools?
norovirus
listeria
e. coli
salmonella

Explanation:

Norovirus is highly contagious and commonly spreads in school - based environments due to close contact among students. It can cause gastroenteritis. Other options like Listeria, E - coli, and Salmonella are also pathogens but are not as commonly associated with rapid spread in schools as norovirus.

Answer:

Norovirus