Evidence for hearing loss in amblyopsid cave fishes

Answer the questions about the attached article. It needs to be 2 pages double-spaced.
1. What question did the authors seek to answer in their paper? 
2. What types of data did they collect to answer their question,and how did they collect their data? 
3. What did they find? 
4. Did the authors answer the question they originally posed? 
5. Finally, name one critique or flaw of the paper.