botulism food poisoning is usually traced to: lead and copper in food tape worms or other parasites in food…

Brief Explanations:

Botulism is caused by the bacterium Clostridium botulinum. This bacterium thrives in low - oxygen environments. Canned foods that are not processed properly (e.g., not reaching high enough temperatures during canning to kill the spores of Clostridium botulinum) can provide such an environment. Lead and copper poisoning are different types of metal toxicities. Tapeworms or other parasites cause parasitic infections, not botulism. Highly acidic foods are less likely to support the growth of Clostridium botulinum as it prefers more neutral - to - slightly - alkaline conditions.

Answer:

improperly processed canned food