Answer:
D) Sentence 6
Step-by-step explanation:
While the rest of the summary talks about the contamination sources, food at the risk of contamination, and prevention from food-borne illnesses, sentence 6 talks about bacteria that may grow on cutting boards, which may or may not contaminate food, and may or may not be related to the preventive measures or causes or sources of food-borne illnesses, especially due to the placement of the sentence at the end, where it seems somewhat out of place. The rest of the summary follows a logical order- stating the topic, elaborating it and proving solutions. Sentence 6 does not fit into this structure.