Read the excerpt from Dr. Martin Luther King's "Letter from Birmingham Jail." Frankly, I have yet to engage in a direct action campaign that was "well timed" in the view of those who have not suffered unduly from the disease of segregation. What is the author's purpose for including this sentence? to establish the suffering experienced under segregation to define the concept of a direct action campaign to criticize the public officials who endorse segregation to explain his unwillingness to postpone his efforts

To explain his unwillingness to postpone his efforts

Explanation:

According to the excerpt from Dr. Martin Luther King's "Letter from Birmingham Jail.", he states that he is yet to be involved in a campaign that was well timed to intervene in the cases of people who suffer from segregation.

Hence, his purpose fr putting that sentence is to show that he is not ready to postpone or be slow about his efforts to end segregation.

it makes the person recieving the message not feel comfortable with the banana

the correct answer would be:  

a. adverb phrase