Multi-choice problem: Continue writing the next sentence in this paragraph:

How to build a social network 
Make profiles on popular platforms. 
Get established on popular sites such as facebook, twitter, instagram, snapchat, pinterest, tumblr, reddit, youtube, and flickr. Be careful what you put on any public profiles, as anyone can look you up.

Choices: 1). People will only find every profile pic you post on facebook and you're not going to get many likes. Instead, log on only to seek out profiles you think may interest them! Stay polite to everyone.; 2). Following people on social platforms can make your profiles look slimmer, and you might have an easier time finding people to hang out with if they're popular. Don't let your popularity limit yourself.; 3). Social profiles on facebook are popular and can be a lot of fun. Ask people to give you their first and last name so you can link your profile to theirs.; 4). You will find the broadest audience there. Ask people you know what social media they use.;
4).