Answer:
The piece of evidence from the poem “Barbara Frietchie” that reveals the author’s symbol for patriotism is the American flag flying defiantly despite adversity.
Explanation:
In “Barbara Frietchie,” the American flag is depicted as flying defiantly despite adversity, symbolizing resilience and unwavering loyalty to one’s country. This imagery reflects the author’s portrayal of patriotism as enduring even in the face of challenges or threats, highlighting the flag as a powerful symbol of national pride and unity.