|A) the chemical reaction between the gases inside the bulb||B) the compressed gases inside rushing out suddenly|
|C) the air outside rushing in to fill the vacuum inside the bulb||D) None of these|
Answer: C) the air outside rushing in to fill the vacuum inside the bulb
The inside of the bulb being a vacuum, the outside air rushes in when the bulb is broken. The vibrations of the rushing air molecules produce the sound.