The Nurse Is Explaining the Action of Botulism, a Disease

The nurse is explaining the action of botulism, a disease in which the causative organism is ingested with contaminated food or water. Contamination usually occurs by accident through inadequate canning and preserving processes, but it also could occur as a result of:

A) Preservatives used on the food.
B) Environmental contamination.
C) Bioterrorist activity.
D) Insecticides used on crops.