Final answer:
The nurse holds full legal responsibility and accountability for their own actions in a hospital setting. This professional accountability is a key aspect of the nursing practice.
Step-by-step explanation:
The question pertains to the legal responsibility and accountability of a nurse's actions in a hospital setting. The individual who holds full legal responsibility and accountability for a nurse's actions is A) The nurse themselves. While the head nurse, physician, and hospital may have supervisory or administrative responsibilities, it is the nurse who is directly accountable for their own professional actions. Depending on the circumstances, there may be shared or vicarious liability with the employer, but the personal professional responsibility of the nurse cannot be overlooked.