Why does the author include these sentences?

the other force is one of bitterness and hatred, and it comes perilously close to advocating violence. it is expressed in the various black nationalist groups that are springing up across the nation.

a) to predict the future of his group’s actions

b) to recall the harsh actions of law enforcement

c) to encourage understanding of black nationalists

d) to provide a contrast to his group’s nonviolent efforts

Read the excerpt from "death by black hole."albert einstein's general theory of relativity, published in 1916, provides the insight to understand the bizarre structureof space and time in a high-gravity environment. later research by the american physicist john a. wheeler, and others, to formulate a vocabulary as well as the mathematical tools to describe and predict what a black hole will do toits surroundings.read the excerpt from "man listening to disc."and i bow deeply to thelonious monkfor figuring out a wayto motorize or whatever-his huge pianoso he could be with us today.these excerpts are similar because both texts

Answer the question on the screen plzzz

What would the tone of the prologue to romeo and juliet be?