Answer: B) Sixty percent of users report making new friends through social media.
Explanation: an argument or claim is a statement assertion that something is true. In the given excerpt we can see developed the claim that social media helps teens who are shy connect with other people. From the given options, the piece of evidence that would better support the claim is the corresponding to option B: Sixty percent of users report making new friends through social media, because it is expressing in an objective way (through statistics) how much social media can help to make new friends.