Choose the right word or phrase that best fits blank space in the following passage:

 

Many people think that social networking is good for several reasons. It is a fast and efficient way of communication that helps people to keep in touch with friends and families by sharing photos and using various (13)            such as instant messaging. It has become the preferred way of interaction for young people because of its speed, convenience, and wide range of functions. People who want to see the person they are talking to online can easily do that by using a video chat app. Those who want to learn a new language like social networking because they can be exposed to authentic language, use and connect with native speakers online. People who want to (14)                            their thought and opinions, and share information with their friends or followers can do that via either microblogging or taking part in online discussion (15)                            . Those who want to relax and escape (16)                                                   reality can access a huge store of online games, music and videos in different genres.

It is a fast and efficient way of communication that helps people to keep in touch with friends and families by sharing photos and using various (13)            such as instant messaging.