Final answer:
Out of the given options, the patient most likely in decompensated shock is the 20-year-old female with absent radial pulses and dilated pupils.
Step-by-step explanation:
From the given options, the patient who is most likely in decompensated shock is the 20yo female with absent radial pulses and dilated pupils. Decompensated shock is a severe form of shock where the body's compensatory mechanisms fail to maintain adequate perfusion to vital organs.
The absence of radial pulses suggests a significant decrease in blood flow to the extremities, and dilated pupils may indicate poor brain perfusion. These signs indicate a critical condition that requires immediate medical attention.