Final answer:
The nurse can use Teach Back to determine the health literacy of the client by assessing their understanding of the instructions.
Step-by-step explanation:
The tool the nurse can use to determine the health literacy of the client is Teach Back. This method ensures that the client understands all of the instructions given by asking them to repeat the information in their own words. It helps assess the client's level of health literacy and identifies any areas where further education or clarification may be needed.
Learn more about Health literacy