I believe it is A. It seems the most logical. I imagined her voice in my head to be pretending excitement and then when talking to the professor, a tired, authentic demeanor. Hope this helps!
Answer:
1) I had the bike checked by my brother before I bought it.
2) The wildlife documentary captured the attention of both children and adults.
3) The bands new album will have been released by the end of the year.
4) Do you feel like having a meal out tonight?
5) Jake was the only person who signed up for the workshop.
6) There was a wide range of restaurants in the city.
The two main economic warning signs that appeared during the Hoover Administration were that inflation was rising at a rate that surpassed 3%, and that the value of companies on the stock market were wildly overvalued.