Question

to appeal to his audience, in \war message to congress,\ wilson mostly relies on
pathos, an appeal based on emotions.
logos, an appeal based on logic or reason.
ethos, an appeal based on the speaker’s character.
force, an appeal based on the audience’s fear of harm.

Explanation:

Wilson's "War Message to Congress" uses logical reasoning (logos) by presenting factual evidence of German U-boat attacks on U.S. ships, violations of neutrality, and threats to American security to justify declaring war. These are appeals based on reason rather than primarily emotion (pathos), speaker character (ethos), or fear (force).

Answer:

logos, an appeal based on logic or reason.