Which of the following lines from the roosevelt speech is an example of ethos?

a-if the congress maintains these principles, the voters, putting patriotism ahead of pocketbooks, will give you their applause.
b-in the future days, which we seek to make secure, we look forward to a world founded upon four essential human freedoms.
c-it is a definite basis for any kind of world attainable in our own time and generation.
d-sense the beginning of our american history, we have been engaged in change in a perpetual peaceful