C.
Some people say that it's official, however there are more nicknames for New York City such as, "The Capital of the World", "The City that Never Sleeps", and "Gotham".
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.
1. Plums
2. Filo Pastry
3. Bread
4. Milk
