Answer:
Irony
Step-by-step explanation:
Given that Irony is a literary term that describes the situation of things or an occurrence that appears intentionally different to what one expects and is most of the time engaging as a result.
Hence, in this case, following the man's success of building a fire, the dousing of the fire by a load of snow was unexpected of him at that time. This shows a tragic irony that must have affected the man's expectations.
Therefore, the correct answer in this case is IRONY.