Final answer:
The nurse demonstrates the critical thinking attitude of Integrity by informing the client about their identity and the details of a procedure, emphasizing the importance of informed consent and ethical conduct. Therefore, the correct option is c.
Step-by-step explanation:
The critical thinking attitude that the nurse is applying by telling the client who they are and explaining a procedure to be performed is Integrity. By providing clear and accurate information to the client, the nurse is ensuring that the client is well-informed before proceeding with any healthcare intervention. The nurse's actions align with the principles of informed consent and ethical conduct, both of which are integral to the nursing profession and are indicative of the nurse's commitment to honesty and ethical practice.