Barack Obama spoke of Potomac's primary speech is said to be the ETHOS.
<u>Explanation:</u>
The ETHOS is a speech in which it is an argument type by a convincing audience with the set of ideas which belongs to a particular type of people with a particular activity.
The pathos is a speech in which it is an argument type by a convincing audience with the quality of experience in life, work, art which stirs up emotion and makes the audience be in favor of him.
The logos is a speech in which it is an argument type by a convince or persuade the audience with the reason and logic makes the audience to be in favor of him and justify his actions.
