Which of the following is an example of allowing improper practice in medicine?

Allowing an unlicensed person to practice medicine is considered an example of improper practice in medicine because it directly contravenes legal and ethical standards designed to protect patient safety and ensure a minimum level of competency. Licensure is granted to individuals who have met specific educational and training requirements, and it serves as a safeguard against unqualified practitioners. When someone without the necessary licensure practices medicine, they may lack the knowledge and skills required to provide safe and effective care, which can lead to serious harm to patients.

In contrast, while the other options also reflect issues of unethical or unsafe medical practice, they involve different aspects of medical conduct. Prescribing medication without proper assessment compromises patient safety and is a significant ethical violation but does not specifically address the legal requirement for licensure. Failing to sterilize equipment can lead to infections and other complications, posing a serious risk to patients but again, ties back to practice standards rather than legal licensure. Ignoring patient feedback indicates a lack of communication or responsiveness but does not specifically involve the legality of who is practicing medicine. Thus, the notion of allowing unlicensed individuals to practice is the clearest example of permitting improper practice from a legal standpoint.