If there is a selection of answers I would go with
Repetition
Parallelism
maybe some others but I don't know all the poetic devices you have to chose from
Vocational schools are usually trade schools.
A. You may understand why some experts think eyewitness testimony is unreliable
The correct answer is A. reliable.
The writer was 'an authoritative source' because of her degrees, guest appearances, etc. Thus, she was a source you could rely on, she was reliable, given that she had experience to back her ideas up. Therefore A is the only correct answer.
