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.
Answer:
3rd line
Explanation: edge test 90%
Elizabethan era! .. or some say jacobean times, either or really
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