Read this excerpt from Rogue Heart If you listen carefully, you can hear the song of the city. It's in the sharp, raucous laughter of the kids barreling down the
crowded streets, in the heavy electronic beats erupting like great beasts from basement clubs, in the wind whistling
through dark alleys, and in the rain as it drops on to the city like so many falling stars.
In the excerpt, what does the word sharp mean?
O having quick abilities
O having a strong piercing tone
O a pointed instrument or tool
O full of activity or energy