Of the following excerpts from the gettysburg address, which is an example of ethos? a "our fathers brought forth on this continent a new nation, conceived in liberty and dedicated to the proposition that all men are created equal." b "we cannot dedicate, we cannot consecrate, we cannot hallow this ground." c "we have come to dedicate a portion of that field as a final resting- place for those who here gave their lives." d "the world will little note nor long remember what we say here."