Final answer:
The situation violates the right of supervision in delegation. The nurse should have provided clear instructions and appropriate supervision to ensure that the UAP followed the client's need for bed rest.
Step-by-step explanation:
The situation violates the right of supervision in delegation. The nurse should have ensured that the UAP was aware of the client's need for bed rest and instructed them not to assist the client out of bed. The nurse is responsible for providing clear instructions and appropriate supervision to ensure that tasks are performed safely and within the scope of practice of the UAP.