Final answer:
The Hippocratic Oath declares that physicians will apply measures for the benefit of the sick, avoiding overtreatment and therapeutic nihilism.
Step-by-step explanation:
The correct answer is b. The Hippocratic Oath. The Hippocratic Oath is a historic statement that outlines the ethical principles and responsibilities of physicians. It includes the declaration mentioned in the question about applying measures for the benefit of the sick, avoiding overtreatment and therapeutic nihilism.