Discuss why there is a need to cite source?

May someone me answer these questions

Which best explains how melville uses his description of ahab in chapter 28 of moby-d ick to comment on the nature of man? through ahab, melville symbolizes how guilt can take over a man’s life. through ahab, melville symbolizes how obsession can take over a man’s life. through ahab, melville symbolizes how inaction can ruin a man’s life. through ahab, melville symbolizes how isolation can ruin a man’s life.

What is the tone in the short story tell-tale heart