What is the survival rate after 4 days?

• A. 19%
• B. 33.7%
• C. 81%
• D. 7.4%

Answer: (A)

Survivability in collapse situations decreases as time passes, because trapped victims have limited air, energy, and increasing risk from conditions inside the rubble. By about four days, the chance of a person still being alive is relatively low, but not zero. The best estimate in typical training data places survival around nineteen percent, meaning roughly one in five potential survivors could still be found alive at that point. This aligns with the understanding that the critical window for rescue narrows with time, though occasional late rescues can occur.