What is considered the professional standard in greetings?

A professional handshake is considered the standard in greetings within a business context due to its significance in establishing a connection and conveying confidence. The handshake symbolizes respect, trustworthiness, and formality, which are essential aspects of professionalism. It serves as a physical demonstration of your willingness to engage and sets the tone for the interaction that follows.

In contrast, while a nod of the head, a casual wave, or a simple smile can all be friendly gestures, they lack the professionalism and intentionality that a handshake conveys. These alternatives might be appropriate in more casual settings or among familiar individuals but do not carry the same weight when establishing professional relationships. Thus, opting for a handshake aligns best with the expectations of professionalism in business interactions.