Final answer:
The LPN should be assigned to the client with pneumonia expecting discharge in the morning.
Step-by-step explanation:
Out of the four clients, the LPN should be assigned to the client with pneumonia expecting discharge in the morning. The LPN can provide basic nursing care and support to this client, such as administering medications, monitoring vital signs, and assisting with activities of daily living. Since the client is stable and awaiting discharge, their care needs are less complex compared to the other clients.