Which technique did kennedy use to encourage america’s participation in supporting human rights throughout the world?
an appeal to logic and science
an appeal to the fear of communism
an appeal to authority and credibility
an appeal to moral responsibility

He preferred to use moral responsibility to participate in human rights as part of having the support of all the citizens of his country and other countries, because it is the just cause that must be chosen to get good reputation in people through ethics , Morality and good deeds in the world.

the USA joined sides of the allies

Explanation:

so there was no way Germany would want to continue the war