<span>d. to show the depth of the mother's willingness to stand up for her heritage*** </span>
The word old-fashioned will be the best choice.
Answer: A. It jumps from topic to topic.
One of the characteristics of Modernist writing is that it attempted to be more realistic. Moreover, it wanted to emphasize the psychological processes of its characters. In the case of internal monologue, modernist writers often portrayed this in a way that jumped from topic to topic. This is because this strategy mimics the way in which the human mind works.
The purpose of King's letter is to cause the Church to fight racial injustice.
As you already know, King was a proponent of equal human rights, for both black, and white people. He wanted the Church to be aware of inequalities in the world and fight racism so as to erase those inequalities.