Kurtz is the man who yells, "The horror! The horror!"
The answer is context clues. This is because you're using the clues from the other words (sentences/paragraphs) to answer the definition of the word.
Answer:
a theme is a setting, mood or vibe something takes place in
Explanation:
C is the central theme of this novel. Melville is sure to characterize the fatigue and exhaustion, that goes in to whaling.