I'd suppose that the answer is most likely: c. Self-monitoring.
(I really hope this is of some help to you)
Answer:
The answer is B.
Explanation:
A non-rebreather mask can deliver levels of the fraction of inspired oxygen (FIO2) as high as 100%.
I'm pretty sure the answer would be: If the person is upright, carefully ease the person to the floor. this is of course after calling 911, followed by looking for the object lodged in the persons throat.
Head I hope I helped you usually the head comes first unless it's the other way around then the AWNSER would be legs