Read this excerpt from "teens migrating to twitter" by jennifer c. kerr and answer the question that follows:

twitter is booming as a social media destination for teenagers who complain about too many adults and too much drama on facebook, according to a new study published tuesday about online behavior. it said teens are sharing more personal information about themselves even as they try to protect their online reputations.

teens told researchers there were too many adults on facebook and too much sharing of teenage angst and inane details like what a friend ate for dinner.

"the key is that there are fewer adults, fewer parents and just simply less complexity," said amanda lenhart of the pew research center, one of the study's authors. "they still have their facebook profiles, but they spend less time on them and move to places like twitter, instagram and tumblr."

in the poll, 94 percent of teens who are social media users have a profile on facebook — flat from the previous year. twenty-six percent of teen social media users were on twitter. that's more than double the figure in 2011 of 12 percent.

"facebook just really seems to have more drama," said 16-year-old jaime esquivel, a junior at c. d. hylton high school in woodbridge, va., in an interview.

esquivel said he still checks his facebook account daily but isn't using it as regularly as in the past. he sees teens complaining on twitter, too, so esquivel has been using the photo-sharing service instagram more often, posting a couple of pictures each day and communicating with friends. facebook purchased instagram last year.

in what may be a concern to parents, more than 60 percent of the teens with twitter accounts said their tweets were public, meaning anyone on twitter — friend, foe or stranger — can see what they write and publish. about one-quarter of kids said their tweets were private and 12 percent said they did not know whether their tweets were public or private.

source: kerr, jennifer c. "teens migrating to twitter." 21 may 2013: n. pag. ap images. web. 17 jan. 2014.

based on this excerpt, this article would be most useful in answering which of the following research questions?

a. what is the most popular topic of conversation on teenagers' twitter feeds?
b. why do parents spend less time communicating on twitter than their children?
c. when is the best time to access social media sites like twitter?
d. how does twitter affect the safety and security of teenagers?