Yesterday was no exception . When I arrived inside the airport in front of the United ticket counter area , the first thing I noticed was that the Premier Executive line was closed off . Normally there are United employees out front directing passengers . This time there were none .

Q with options: Give answer the following question using evidence from the above passage: What may have happened when the United employees directing passengers were absent
Pick from: a. None of the above choices .; b. There was a robbery attack; c. The queue were with no orders; d. The plane seized to move;
c.