Could you specify a bit more on what your looking for please
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.
I believe that "like a slackened drum" is the implied metaphor.
Krogtad it is it’s off edge
