Final answer:
Hippocrates is credited with advancing the idea that diseases have natural causes and with establishing ethical practices in medicine, known widely as the 'father of Western medicine'.
Step-by-step explanation:
The student nurse who is studying the history of health care would recognize that Hippocrates is credited with the development of modern principles of medicine that dismiss supernatural causes for diseases. Instead, he posited that diseases had natural causes and could be a result of factors from within patients or their environments. Hippocrates is famously known as the 'father of Western medicine' and is associated with the Hippocratic Corpus, a significant collection of medical texts, and the Hippocratic Oath, which new physicians take to pledge their commitment to ethical medical practice.