Final answer:
C. Auguste Dupin is the main character in 'The Murders in the Rue Morgue', an amateur sleuth skilled in analysis and observation. Occupations are not the focus in the story; instead, it showcases Dupin's deductive abilities in solving crimes.
Step-by-step explanation:
The main character in Edgar Allan Poe's The Murders in the Rue Morgue is C. Auguste Dupin, a gentleman with a strong penchant for analysis and observation, which makes him a forerunner to the classic detective. Dupin is involved in solving mysterious crimes through the power of deduction. One could incorrectly assume that he has a vocation in law enforcement; however, he is not formally employed by the police force or as a private detective, distinguishing his role as an amateur sleuth.
The narrative of The Murders in the Rue Morgue unfolds primarily through the interactions and dialogues between characters, rather than descriptive passages of their physical characteristics or professions. The story serves as a prime example of how Poe pioneered the detective fiction genre, depicting Dupin's methods of logical reasoning to uncover the truth behind a perplexing crime. The story does not focus on the physical appearances or employment of its characters, but rather on their intellectual processes, social interactions, and the mysterious circumstances they investigate.