Final answer:
The key characteristic of Next-Best-Action to satisfy customer needs is Timeliness, ensuring prompt and relevant actions for effective customer service.
Step-by-step explanation:
The key characteristic that Next-Best-Action must consider to satisfy customer needs is D) Timeliness. This aspect ensures that the actions taken are prompt and relevant to the customer’s current situation and requirements, enhancing customer satisfaction and effectiveness of service. In the context of Next-Best-Action strategies in customer relationship management, other important factors include concentrated listening and situational awareness, invested pursuit of character needs, vulnerability and relationship, communion, imagination and uninhibited curiosity, and consistency with details of the character's world.
However, timeliness remains the most crucial to ensure that the action taken is both appropriate and impactful at the right moment.