When medical research indicated that a high-fiber diet might reduce one's risk of colon cancer, a few producers of fiber cereals suggested in their advertisements that if you eat fiber cereal, you will not get cancer. this is an example of

unethical communications

Explanation:

According to my research on different marketing techniques, I can say that based on the information provided within the question this is an example of unethical communications. This is because the cereal company used the medical research and adjusted it to sell more of their cereal. The medical research states that might reduce risk of cancer but it is not a 100% fact, yet the cereal company states that it 100% prevents cancer. This is unethical.

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answer; societal marketing;