Which of the following serves as an example of a signal used to convey private information?

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Enzo selects a meaningful present specifically for Josephine.Josephine completes her MBA at Harvard Business School.Lexus promotes its vehicles during the football World Cup Final.All of the above options are valid examples.

Explanation

Each of these actions functions as a signal that reveals private information: Enzo's thoughtful gift choice, Josephine's prestigious MBA degree, and Lexus's targeted advertising during a major event. Therefore, all these examples demonstrate signaling.