What is
a block style business letter?

What evidence could be used to support the authors'claims in this excerpt? select three options.- tweets (twitter messages) describing the overthrow ofben ali at the time it happened- verifiable facts that explain that social media haslittle effect on citizen journalism-speeches that give biographical accounts of the life andaccomplishments of mubarak-journal entries from a student describing how socialmedia him join a protest- quotations from experts on social media use duringuprisings within the arab world