I believe it would be the middle one, children's
B. it conveys the subject of the paragraph.
A topic sentence is the main idea which is the subject of the paragraph.
The correct answer to this open question is the following.
Unfortunately, you did not attach the Cell Phones article, neither the cells to place the answers. Without that information is so difficult to help you.
However, trying to help you, we did some deep research and found the following. Hope it helps.
A mobile telephone or cellular telephone (commonly, (1) MOBILE PHONE or cell phone) is a long-range, portable electronic (2) DEVICE used for mobile communication. In addition to the standard voice function of a telephone, current mobile phones can provide many additional (3) SERVICES such as SMS for text (4)MESSAGING, e-mail, packet switching for access to the Internet and MMS for (5) SENDING and receiving photos and (6) VIDEOS.
A mobile phone is more than just a phone for most teenagers: it’s also a (7) MP3 PLAYER and a camera. Text messaging is (8) CHEAPER and more private so they use it a lot more than phoning.
Answer:
If you are asking for THE correct answer, there is no one answer. Instead, (and in the absence of any context), this question is asking for one's opinion.
If you want MY personal opinion, then I would say: laughter.
Explanation:
