Final answer:
Performing a neurologic assessment is the nurse's priority in the given scenario because it helps evaluate the client's neurological status and determine if there is an immediate need for intervention or further diagnostic tests.
Step-by-step explanation:
A rapid assessment of neurological function is important in an emergency situation because it helps identify any potential neurological issues or conditions that could be causing the patient's symptoms. In the given scenario, the client reported a sudden blurry vision while driving a week ago, which could indicate a neurological problem. Performing a neurologic assessment would help the nurse evaluate the client's neurological status and determine if there is an immediate need for intervention or further diagnostic tests.