Which of the following statements describes the term "profession"?

Sociologically and legally, a "profession" is distinct from a standard occupation, trade, or business group. The defining characteristics of a true profession (such as medicine, law, or engineering technology) include a foundation of highly complex, specialized intellectual knowledge, a formal system of education and registration, and the privilege of self-regulation granted by the government. However, the most critical differentiator is the ethical commitment to public service. Members of a profession are expected to place the welfare of the public and the integrity of the profession above their own pure commercial or personal financial gain. A group of skilled workers (Option C) or people with common interests (Option B) does not constitute a profession unless they are bound by a rigorous, legally enforceable Code of Ethics that mandates this overarching duty to protect and serve society. Therefore, the combination of specialized knowledge and an inherent duty to public service perfectly encapsulates the term.