What is ergotism? a. poisoning by ergot fungus c. a type of fungus that infects wheat b. an antibiotic produced by fungus d. a derivative of penicillin?

Poisoning produced by eating food affected by ergot, typically resulting in headache, vomiting, diarrhea, and gangrene of the fingers and toes. so it would be A

 An ergotism is the process of poisoning produced by eating food affected by ergot, typically resulting in headache, vomiting, diarrhea, and gangrene of the fingers and toes.