Final answer:
The criteria demonstrating that nursing is recognized as a profession include ongoing research, a well-defined body of knowledge, the setting of standards, and a code of ethics.Hence, the correct options are 1,2, 4, and 5.
Step-by-step explanation:
In order to demonstrate that nursing is increasingly recognized as a profession, the nurse should utilize several criteria. Firstly, ongoing research is critical as it helps in advancing the practice of nursing through evidence-based findings. Secondly, a well-defined body of knowledge is essential as it underpins the theoretical and practical aspects of nursing. Fourth, the nursing profession must set standards that define the level of care and competence nurses must adhere to. Lastly, a code of ethics is paramount because it provides moral and ethical guidelines for the nursing profession. While regulation by the medical profession may play a role, nursing has its own regulatory bodies such as nursing boards that ensure standards of practice are met, thus 'regulation by the medical profession' does not necessarily apply to nursing's recognition as a separate profession.