Answer:
The options that best explain Obama’s rhetorical purpose in the speech are:
* To celebrate an important milestone in the history of civil rights
* To inform and educate his audience about the history of social injustice in America
Step-by-step explanation:
The Speech of Barack Obama about the "50th Anniversary of the Selma to Montgomery Marches" uses rhetorical to emphasise the importance of the past events of change in order to have a new society where everyone has more freedom do express themselves and to get as far as they can, as long as they put all their effort on it.