Final answer:
Negotiators should determine what others are already doing and decide whether to build on that work or take a different route. They should also identify the most effective means of translating their vision for different audiences. Considering the knowns and unknowns is important in choosing strategies.
Step-by-step explanation:
According to Weiss, when choosing a strategy, negotiators should determine what others are already doing to address the need, then decide whether to build on that work or take a different route. They should also identify the most effective means of translating the vision for their audience, which may differ from the audience targeted by other advocacy groups. Additionally, negotiators should consider the knowns and unknowns of the situation and determine which strategies or approaches will yield the desired outcomes.