Answer:
D.
Step-by-step explanation:
Conflict can be defined as the struggle against the opposing forces. This conflict is usually faced by the protagonist in literature in which he is faced with opposing forces such as nature, society or man, and self.
Man v. nature conflict is an external conflict in which the protagonist face opposition from natural forces such as natural disaster, weather, animal, or wilderness.
From the given options, the man v. nature conflict can be seen in the fourth option. It is a man v. nature conflict because the opposition has arisen from the animal; wolves.
So, the correct answer is option D.