A client who just completed ambulating in the hallway reports shortness of breath; at the same time, the meal tray has been delivered and the laboratory technician has arrived to perform routine blood testing. Which action would the nurse take?
A. Assist the client with feeding.
B. Position the client for comfort with head of the bed elevated
C. Ask the laboratory technician to draw and run the laboratory testing stat.
D. Guide the client to a sitting position on the floor of the hallway.