Read the poem and answer the question. Bold banners billowed, bright and blue, The pale day lay in dusty air; The moon was a coin of borrowed gold, And laughter leapt from stair to stair. Small cymbals clashed like temple rain, The children danced till midnight's chime; The sleepy lamps leaned low and late, And dusk was a drum of time. "And laughter leapt from stair to stair" is personification because: