Which of the following is an example of alliteration?
a. under grey stone his voice challenged and resounded clearly. hate was ignited.
b. the billowing sail blew boldly in the breeze, beating a rhythm that broke the silence.
c. the fire-breather pounced at the sword-bearer, frightening the news-gatherers who were audience to the battle.
d. the click-click-click of the dog's nails as he jogged down the hallway was like a metronome keeping time to the music of the house.