Read the passage, and answer the question that follows:
Darien looked out his dad's office window. He saw the people scurrying about like a million ants, running to or from lunch or appointments. He saw the trees in the square, just beginning to turn green with tiny buds. He saw the children playing with their yellow bouncy balls. His eyes skimmed over all of the sights until they rested on a large American flag, hanging above the rubble of the fallen building.
Which object in the paragraph best symbolizes pride?
The yellow bouncy balls
The fallen building
The large flag
The green trees