I think the answer is 1, change ammonia into nitrates.
Answer:
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Explanation:
The nurse should suspect of a fractured jaw.
The crepitus is a common sign of bone fracture and it's heard when the fractured surfaces of two broken bones rub together.
Also If there is a severe jaw fracture, the patient might experience limited ability to move the jaw or be unable to move it at all.
Choice b choice b choice b choice b choice b