I think C is the most accurate choose to define elaboration
Answer:
A the gate opened to let us in FINALLY it was our turn to go on the ride.
Explanation:
☆☆☆☆☆
It's either b or c, I remember her accusing him of both
The main thing that this question is asking is which sentence does not have a formal tone. A formal tone for research writing usually means using more professional (instead of casual, everyday) language and free of your own opinions.
This means choice D is inappropriate because it is opinionated. Using "I think" is not formal tone.
------
Answer: D) I think one of the most frustrating things about owning a cat is that they don't obey many commands.