A 27-year-old is hospitalized with metastatic ovarian cancer. She cannot communicate verbally because of a tracheostomy, however, she has clearly written ‘NO’ on a piece of paper after her oncologist explains an investigational procedure he would like to try to keep her cancer from spreading further. The patient’s input is an example of exercising which ethical principle?

O Veracity
O Autonomy
O Beneficence
O Fidelity