If you are targeting an audience with diverse information needs and levels of interest in your topic, how should you focus your message?

A) Write a separate message for each subgroup
B) Format your message in a table with one column of information for each subgroup
C) Estimate the average level of audience knowledge and structure your message around that
D) Target your message at the key decision makers while incorporating the needs of other groups as much as possible
E) Provide a little bit of information for every segment of the audience

D
Explanation: D) Identify your primary audience. For some messages, certain audience members may be more important than others.