Final answer:
The possible audiences that could be identified as part of an audience list include internal audiences, upper management, and requesters.
Step-by-step explanation:
The correct answer is d. All of the above.
Public opinion refers to the collective preferences, beliefs, and attitudes of the general public on a particular issue. It can be influenced by various factors, and different categories of audiences can be identified as part of an audience list. Some possible categories include internal audiences, which are individuals within a specific organization, upper management, which refers to the higher-level executives within a company, and requesters, which are individuals who have made a specific request or inquiry.