Final answer:
The Glasgow Coma Scale measures a person's level of consciousness based on eye-opening response, verbal response, and motor response. The patient described in the question would have a Glasgow Coma Score of 15.
Step-by-step explanation:
The Glasgow Coma Scale (GCS) is used to assess a person's level of consciousness. It measures three aspects: eye-opening response, verbal response, and motor response. Each aspect is assigned a score, and the scores are then added together.
In this case, the patient refuses the insertion of a nasal airway, curses, and sits up, indicating purposeful and appropriate responses. Therefore, his eye-opening response would be a score of 4, his verbal response would be a score of 5, and his motor response would be a score of 6. Adding them together, the Glasgow Coma Score for this patient would be 15.
Thus, the correct answer would be: a. 16.