Final answer:
Mrs. Nelson's blood pressure of 146/94 mmHg indicates that she is hypertensive. The nursing assessment should be option 4, reassessing her blood pressure in 15 minutes.
Step-by-step explanation:
The correct nursing assessment for Mrs. Nelson, who has a blood pressure of 146/94 mmHg, is that the client is currently hypertensive. This assessment would correspond to option 4 from the provided choices, as this blood pressure measurement is above the normal range and indicative of hypertension, not hypotension. The nursing action would involve reassessing Mrs. Nelson's blood pressure in 15 minutes to monitor and manage her hypertension appropriately.