Which word in the sentence, if any, should be followed by a colon?

we tried to find copies of the book at the library, at a used book store, and even through an online reseller.

a. copies

b. to

c. at

d. there is no error in colon usage.

Which of the following group roles has the responsibility of keeping the discussion on schedule?

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

Correct sentence. when her brother boarded the ship bound for america, christina stood on the pier and tearfully waved goodbye.