**Core Concept**
Infamous conduct refers to a set of behaviors or actions by a medical practitioner that are considered unprofessional, unethical, or reprehensible. These actions can lead to severe consequences, including loss of medical licensure and reputation damage.

**Why the Correct Answer is Right**
Infamous conduct encompasses a range of behaviors, including but not limited to, gross incompetence, gross negligence, sexual misconduct, and abandonment of patients. These actions demonstrate a blatant disregard for the principles of medical ethics and the Hippocratic oath. Medical professionals who engage in such conduct put their patients at risk and undermine the trust that is essential for a therapeutic relationship.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is a characteristic of infamous conduct. Gross incompetence refers to a medical practitioner's inability to provide adequate care, often due to a lack of knowledge, skills, or attention to detail.
**Option B:** This option is incorrect because it is a characteristic of infamous conduct. Gross negligence involves a medical practitioner's reckless disregard for the well-being of their patients, often resulting in harm or injury.
**Option D:** This option is incorrect because it is a characteristic of infamous conduct. Abandonment of patients refers to a medical practitioner's failure to provide necessary care or attention, leaving patients without proper treatment or support.

**Clinical Pearl / High-Yield Fact**
One key distinction between infamous conduct and other forms of unprofessional behavior is that infamous conduct often involves a deliberate intent to harm or exploit patients. Medical professionals must be aware of this critical difference to ensure they can identify and report such behavior promptly.

**Correct Answer:** C.