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.
20-8.
so 20 less than 8..
20,19,18,17,16,15,14,13,12. you stop.
12 is the answer
the seven commandments of noah
