Final answer:
The nurse should identify the statement 'I can't believe this is happening to me. It must be a mistake.' as an indication that the client is in the denial stage.
Step-by-step explanation:
In the grief process, the denial stage is characterized by the individual not wanting to believe they are dying. They may express thoughts such as 'I feel fine' or 'This is not really happening to me.'
The statement that the nurse should identify as an indication that the client is in the denial stage is
B) I can't believe this is happening to me. It must be a mistake.