<prompt> A cook prepares sandwiches for 10 people going for a picnic. Eight out of them develop severe gastroenteritis within 4-6 hrs of consumption of the sandwiches. It is likely that on investigation the cook is found to be the carrier ofSalmonella typhiVibrio choleraeEntamoeba histolyticaStaphylococcus aureus  <response>: Staphylococcus aureus produces toxins that can act as food poisons. Ref: Ananthanarayan and Paniker;s Textbook of Microbiology, 9th edition; pg no: 207 