Betty is $34$ years old and is being treated by Dr$.$ Lucy. Dr$.$ Lucy determines that Betty needs a blood transfusion to treat her low hemoglobin level. Without the necessary number of blood units, Dr$.$ Lucy explains to Betty that she will likely die before the end of the day. However, Betty is adamant and refuses all blood$/$blood products. She claims that her decision is inspired by her religion. Which of the ethics principles Betty and Dr$.$ Lucy are using to justify their respective position?