Read the following excerpt from abraham lincoln's emancipation proclamation: now, therefore i, abraham lincoln, president of the united states, by virtue of the power in me vested as commander-in-chief, of the army and navy of the united states in time of actual armed rebellion against the authority and government of the united states and as a fit and necessary war measure for suppressing said rebellion, do on this first day of january, . .how does lincoln use ethos in this excerpt?
a. by citing other officials who support his views
b. by citing the office to which he was elected
c. by urging the audience to refuse to accept slavery
d. by using facts and statistics to show his logic