The correct answer is 4. An unnamed narrator because the primary narrator of Heart of Darkness by Joseph Conrad is an unnamed, first-person narrator who recounts the story as told by Marlow.
Explanation:
The novel begins with the unnamed narrator describing the scene aboard a ship on the Thames, setting the frame for the story.
Marlow is a key character and a secondary narrator who recounts his journey into the Congo and his encounters with Kurtz. However, Marlow's narrative is embedded within the larger narrative of the unnamed narrator, who serves as the framing device for the story.
This structure creates a narrative within a narrative, making the unnamed narrator the primary one, while Marlow's tale is part of the overall narrative structure.
Thus, the "correct" answer reflects the distinction between the overarching narrator (the unnamed individual) and Marlow, who narrates most of the inner story.