VII. Choose the word or phrase among A, B, C or D that best fits the blank space in the following passage.

E-mail, and chat rooms let children communicate 46 _____________ friends and family members. They can also allow children to connect with people that they have never 47 _____________ in person. Knowing a little about each of these communication services can help parents 48 _____________ children safer while online.
Through e-mail, 49 _____________ can easily send and receive messages. These messages may also have text, audio, and picture files attached. Signing up for an e-mail account is simple 50 _____________ most services offer them for free. Sometimes these messages contain viruses, or other inappropriate content, so parents should 51 _____________ children to be wary of e-mails from 52 _____________ people.
Chat rooms are online hang-out spots where anyone can talk about 53 _____________ - current events, books, and 54 _____________ common interests. Users often do not know each other in real life, so it is important that parents keep a close eye on the content of any 55 _____________.