Final answer:
The priority question for the ER nurse to ask is "Can you describe the location and intensity of your abdominal pain?"
Step-by-step explanation:
In this scenario, the priority question for the ER nurse to ask would be A. "Can you describe the location and intensity of your abdominal pain?"
By asking about the location and intensity of the pain, the nurse can gather important information to assess the severity and potential causes of the abdominal pain. This information can help the nurse determine the appropriate course of action and provide appropriate care.