> News sites give information about news or what is trending around the area or world (CNN, Fox, MSNBC, etc)
> Search engines is what allows you to look up websites (Google, Bing, Yahoo, etc)
> Social media AKA Social Networking sites is interaction social sites where you connect with various people from around the world. (Facebook, Twitter, Google+, etc)
>Apps is short for applications which is an application that has a specific function (Games, Music, Social networking)
So based on this, you answer is Social Media