Answer:
The most appropriate way for the president to address an audience of military would be to give logical facts that the war would be beneficial and surmountable.
Step-by-step explanation:
Persuasion is an act of persuading someone in doing something. To persuade someone, there are techniques used to do.
In the given instance, the president needs to approach the military audience using logos or logical approach. Logos is a persuasive technique in which the speaker uses logic to persuade his audience.
The president, in the given instance, may use the logical way of approach to persuade his audience of military advisors.