Final answer:
The example of written communication that uses the contrast principle is 'a report highlighting the differences between two products with the same function', as it directly compares and contrasts to emphasize differences.
Step-by-step explanation:
Within business communication, the use of contrast principle to structure data involves analyzing and elucidating differences between entities, such as products, services, or concepts. The contrast principle is a reasoning strategy that can be seen in various forms of analysis, including the structure of a business report or a comparative essay.
In the context of the question, the example of written communication that uses the contrast principle to structure data is 'a report highlighting the differences between two products with the same function'. This type of report utilizes comparison and contrast directly to emphasize how the products differ from each other despite serving the same purpose. The organization of the report is likely to be focused around the differential aspects of the products, thus enabling readers to analyze and evaluate the two entities side by side.