The Answers C
Probably not D, because its probably not that urgent as this machine can cause severe unconsciousness, or even death.
Maybe not A because it may not be there for the person for its too big, and it usually used in hospitals. Basically, its not portable.
Not B Either.
Answer: (D) Take appropriate Standard Precautions, apply high-concentration oxygen by nonrebreather mask, and transport the patient ASAP, carefully monitoring the patient during transport.
Explanation: