Final answer:
The nurse should provide tissues and offer comfort when a client in the terminal stage of cancer is crying.
Step-by-step explanation:
When a nurse observes a client in the terminal stage of cancer crying, the appropriate action would be to provide tissues and offer comfort.
This is because crying is a natural emotional response to the difficult situation the client is facing, and offering support and comfort can help the client feel heard and understood.
Leaving the client alone to respect their privacy may not be the best approach, as it may make the client feel isolated and uncared for in their time of need.
Advising the client to stay strong or notifying the physician immediately may not address the emotional needs of the client in that moment.