What stood as a symbol of justice for the old man Bryan talks to?

The correct answer reflects the idea that the scars on the old man's arms serve as a powerful and personal symbol of justice in his life. In "Just Mercy," Bryan Stevenson emphasizes the notion that personal experiences, such as scars from struggle or hardship, can embody broader themes of suffering, resilience, and the quest for justice. These scars are reminders of the injustices faced and the fight for dignity, representing the lasting impact of systemic issues on individuals. They illustrate the personal toll of injustice and how these marks become a narrative of survival and the pursuit of equitable treatment within a flawed justice system.

The other options address elements of community and institutional support, but they do not encapsulate the deeply personal and physical manifestation of struggle that the scars represent. The church service and community support are important elements in the narrative, emphasizing solidarity and faith, while the legal system often serves as a point of critique rather than a symbol of justice in the lives of the oppressed characters Stevenson highlights. Thus, the scars embody the old man's history and serve as a profound symbol of his journey in seeking justice.