Answer: One of the reasons why she did not earn the grade she wanted was that:
Her presentation was not as impressive as they would have wanted.
Explanation: This is so because, according to the passage above, "She kept the same volume, rate, pitch and tone throughout the speech" this means as she was presenting her tone which should be captivating her audience was seemingly the same. This would not allow the audience to really feel the information that is been conveyed.