Answer:
Research related to the popular use of social media in Egypt.
A statistic supporting the claim that social media use in Egypt is not widespread.
Widespread testimony about how social media use has changed in Egypt.
Explanation:
These are the three options that explain the types of evidence that the authors used in this excerpt.
First, the authors talk about the popular use of social media in Egypt when they argue that the Pew Research Center's Global Attitudes Project has looked at this information.
Second, the authors employ a statistic that supports the fact that social media is not widespread when they say that 65% of people do not use the Internet.
Finally, the authors use widespread testimony when they argue that most people who are online use social media to learn about the political situation in their country.
However, the authors never talk about how social media changed after the Arab Spring.