Which term describes the proper practices of behavior in a professional setting?

The correct term for describing proper practices of behavior in a professional setting is etiquette. Etiquette encompasses the customary codes of polite behavior and conduct that professionals are expected to follow in various situations, such as business meetings, networking events, and workplace interactions. It includes aspects like communication style, dress code, punctuality, and respectful interaction with colleagues and clients. Understanding and adhering to etiquette can enhance relationships and create a positive impression in a professional environment.

The other terms, while related to behavior and conduct, have different meanings. Ethics refers to the moral principles that govern an individual's behavior or how an activity is conducted, particularly relating to what is considered right and wrong. Rules are specific guidelines or conduct requirements established by an organization or institution, which may include aspects of professional behavior but are not limited to the broader social niceties that etiquette covers. An amendment refers to a change or addition, typically in legislative or legal contexts, and does not pertain to day-to-day professional conduct.