Final answer:
Rebecca is exhibiting democratic leadership at a working lunch, where group participation and consensus are emphasized, as opposed to a top-down communication style.
Step-by-step explanation:
Rebecca is practicing democratic leadership by attending a working lunch with community leaders to share her nonprofit organization's values. This style of leadership encourages group participation in all decision-making and works hard to build consensus before moving forward. In the given context, Rebecca is likely trying to facilitate discussions and ensure that everyone's voice is heard, which is indicative of a democratic leadership approach, rather than an executive or subordinate role which implies a more top-down communication style or being led by others, respectively. This is not legislative leadership as that pertains to governmental and political spheres, and the novel is not a recognized type of leadership style.