What should a nurse tell a client who wishes to refuse chemotherapy?

The correct choice emphasizes the client's autonomy in making decisions about their healthcare. By stating that the client has the right to refuse chemotherapy, the nurse acknowledges the fundamental principle of patient rights, which is the right to make informed decisions regarding their treatment options. This approach respects the client's wishes while also ensuring they are adequately informed about the potential risks associated with their choice to refuse treatment. The nurse's role includes providing information about the consequences of their decisions without coercion or judgment, fostering a supportive environment for the client's autonomy.

This option balances respect for the patient's decision-making with ensuring they are aware of the potential implications of their choice, which is key in nursing practice. The other options do not adequately respect the client's autonomy or inform them properly about the choices they are making.