Which sentence requires the use of a citation?
a. teenagers should put their phones down and concentrate on driving instead of who is texting them.
b. in 2010, texting while driving was found to be the cause of 27% of traffic accidents among teen drivers.
c. i admit that i am guilty of texting while driving, but i have made an effort to put my phone away while driving.
d. driving down the road, you often see teenagers engaging in the dangerous practice of texting while driving.