Final answer:
The conflict where a novel's main character continually argues with his neighbor is a Man vs. Man conflict(option d). This external conflict involves a struggle between two characters, different from conflicts that a character might have within themselves or against society, nature, or fate.
Step-by-step explanation:
If a novel's main character continually argues with his neighbor, he is involved in a Man vs. Man conflict. This type of conflict is one of the most common in literature, and is considered an external conflict because it involves opposition or struggle between two characters. It can center on characters' conflicting values, needs, interests, or simple personal disagreements.
In contrast, other types of conflict include Man vs. Self, where a character deals with inner turmoil or moral dilemmas; Man vs. Nature, which involves a character facing natural disasters or survival scenarios; Man vs. Society, where the character confronts societal norms, laws, or cultural expectations; and Man vs. Fate/Supernatural, which is about struggles against destiny, gods, or unseen forces.
The conflict in our example, however, is purely between two individuals, and therefore, the correct answer is D) Man vs. Man.