Answer:
B. Logos, because Eisenhower is providing facts and statistics about military enlistments and spending.
Step-by-step explanation:
Logos appeals to the audience's reason, building up logical arguments. Ethos appeals to the speaker's status or authority, making the audience more likely to trust them. Pathos appeals to the emotions, trying to make the audience feel angry or sympathetic, for example.
This excerpt was stating logic, or factual statements. So it's Logos.
Hope this information i gave you helps :D