Final answer:
A print advertisement (option A) is an example of an informational message geared toward an external audience, as it is designed to inform potential customers or the public about products or services.
Step-by-step explanation:
An informational message geared toward an external audience is intended to provide information to individuals outside of the organization. The answer to the question, 'Which of the following is an example of an informational message geared toward an external audience?' is A. A print advertisement. Print advertisements are designed to communicate information about products, services, or events to potential customers and the general public, making them an external form of communication.
Unlike print advertisements, inventory reports and employee handbooks are typically for internal use within a company, while an office calendar is also an internal tool for organizing and communicating company or office events among employees.