In a trauma situation where the patient is suddenly losing consciousness and decompensating, you would expect to see vital signs that indicate a deterioration of the patient's condition.
Among the options provided, the reading that most likely reflects this deterioration is:
Pulse 140, Resp 10, BP 90/60
This combination shows a high pulse rate (tachycardia), low respiratory rate (hypoventilation), and low blood pressure (hypotension), all of which are consistent with a patient who is decompensating due to shock or severe distress.
The other options either indicate stable/normal vital signs or suggest a catastrophic event (like pulse and respiration being zero, which would indicate death). Thus, the monitored vital signs in a patient who is decompensating would likely show increased heart rate and signs of inadequate perfusion, making the third option the most appropriate.