Foodborne illness caused by clostridium botulinum a. is associated with the foodservice industry or events where large quantities of food are prepared. b. appears within 12 to 36 hours of ingesting contaminated food. c. usually is caused by consuming improperly home-canned food. d. can cause human illness in about 4 hours.

The right option is c. usually is caused by consuming improperly home-canned food.

Botulism is a severe food borne illness caused by the bacteria clostridium botulinum. This illness is caused by eating foods contaminated with the bacteria or its toxin.  Ingestion of foods that are not canned properly at home is the major cause. Symptoms of botulism generally appear 12 to 72 hours after eating contaminated food.

the electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, x-rays, and gamma-rays.

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