Clustering is a type of prewriting that allows you to explore many ideas as soon as they occur to you. Like brainstorming or free associating, clustering allows you to begin without clear ideas.
D does not provide good support.
Dr. King compares his letter to a book because he wants the people to know that fighting is never the key to every thing. He compared his letter to a book because he wants peace freedom and religion. Martin Luther King<span>, Jr., composed a </span>letter<span> from </span>his<span> prison cell in Birmingham. Hope this answers the question.</span>
