An Empathy Map is a tool used in UX design to synthesize and articulate what a design team knows about a user group. It helps in creating a shared understanding of user needs within an organization. The key features of an Empathy Map include:

User Insights: It captures what users say, think, do, and feel, providing a holistic view of their experiences and perspectives. This helps in understanding users at a deeper level.

Shared Understanding: By visualizing user attitudes and behaviors, an Empathy Map facilitates a common understanding among team members and stakeholders, ensuring that design decisions are aligned with user needs.

An Executive Summary (option A) provides a high-level overview of project objectives and outcomes but does not delve into user-centric insights. Prioritizing a Backlog (option C) is more about organizing and prioritizing tasks and features rather than synthesizing user research findings.