What must be done before receiving a verbal briefing?

Before receiving a verbal briefing, it is essential to preview the position. This involves understanding the context and environment of the position you are about to assume responsibilities for. By doing so, you can familiarize yourself with the current traffic situation, recent communications, and any pertinent information or issues that may affect your duties.

Previewing the position allows for a more productive verbal briefing since you'll have a baseline understanding of what’s happening at that location. This preparation enhances communication during the briefing, enabling you to ask relevant questions and clarify points that may need further explanation. The other options, while they may contribute to your overall readiness, do not specifically relate to the immediate task of preparing for a verbal briefing as directly as previewing the position.