5. At the outbreak of WWII, most Amercans could be considered a. Isolationists favoring neutrality
b. Interventions favoring direct assistance to our allies
c. In favor of Manifest Destiny
d. In favor of air travel

A) isolationists favoring neutrality.

Up until The Attacks at Perales Harbor, The US decided to stay neutral during WWII. C is not correct because Manifest Destiny is the idea that the US is so great that they believed that the US should extend to both coasts.