Final answer:
The nurse's priority action in this situation is to decrease the rate of the IV infusion.
Step-by-step explanation:
The nurse's priority action in this situation is d. Decrease the rate of the IV infusion. A blood pressure of 76/55 mm Hg indicates hypotension, which means that the client's blood pressure is lower than normal. The shortness of breath could be a sign of fluid overload or fluid shifting into the lungs, which may be exacerbated by the rapid infusion of 1000 mL of normal saline. Decreasing the rate of the IV infusion will help prevent further fluid overload and relieve the client's symptoms.