<prompt> Botulism is most commonly seen withFood with preservativesHome canned foodCommercially canned foodUnpasteurized milk  <response>: The source of botulism is usually preserved food, meat, and meat products. Proteolytic varieties of clostridium botulinum can digest food, which then appears spoiled. The cans are often inflated and show bubbles on opening. Non-proteolytic varieties leave food unchanged. Reference: Textbook of Microbiology; Anathanarayan and panikers; 10th edition; Page no: 269 