Answer:
A). Tweets (Twitter messages) describing the overthrow of Ben Ali at the time it happened.
D). Journal entries from a student describing how social media helped him join a protest .
E). Quotations from experts on social media use during uprisings within the Arab world.
Step-by-step explanation:
The evidences that could be used to back the author's claim in the given excerpt are options A, D, and E as these would assist in substantiating the claims proposed. The 'tweets' would help exemplify the actual time the incident occurred while the 'journal entries' would illustrate how 'social media encouraged Ben Ali' to join the protest. The 'quotations from experts' would help know the prevailing ideology that was used 'during uprisings within the Arab'. Thus, options A, D, and E are correct.