Question

Which story line primarily concerns external conflict?

In “To Build a Fire,” a newcomer sets out alone on foot when the temperature is seventy-five degrees below zero.
In “The Monkey’s Paw,” a couple is given the opportunity to ask for three wishes.
In “Two Friends,” one man must decide between his own personal safety and the safety of his friend.
In “One Thousand Dollars,” a carefree young man has inherited a small sum with the condition that he reports how he spends it.