B)Charles Dickens is the answer.
Answer: Drama
Explanation: Drama is a Greek word that means - action. In literature, a drama is the portrayal of fictional or non-fictional events through the performance of written dialog (either prose or poetry). Dramas can be performed on stage, on film, or the radio. Dramas are typically called plays, and their creators are known as “playwrights” or “dramatists.”
King is speaking to his clergymen they are the audience because they felt kngs actions were unwise and untimely and he didnt want to loose their support. King writes them to explain why he decided to take direct action in the form of peaceful protest.<span>These clergymen have also been highly critical of Martin Luther King Jr.'s "revolutionary" ideas. He writes to them in hope of reminding them that they have a moral obligation and duty to persuade them to joining his efforts.</span>
3). life's unpredictability and urge people to enjoy their youth