Read the following passage and determine the text structure. Avalanches (when a lot of snow falls from a mountain) may bury people under them. If the people are not found rapidly enough by rescue teams they will die of suffocation (not getting enough air) or of hypothermia (freezing cold). The chance of surviving an avalanche is as follows:

92% if found within 15 minutes
30% if found within 35 minutes (victims die of suffocation)
nearly zero after two hours (victims die of injuries and hypothermia)
Select one:
a. cause and effect
b. chronological/timeline
c. problem and solution
d. compare and contrast