Answer 1 is the most likely option.
I have not read the book but the hint refers to PROBLEMS that Jack is causing, and challenging leadership and rules seems the most problematic as the rest of the answers seem like helpful behavior.
Answer:
There has been a <em><u>plethora</u></em> of phone calls from worried customers for the past two days.
Explanation:
The perfect word choice :-)
The Cornell method has been proven to be very useful & is used throughout high school/college education. color coding notes & making them aesthetically pleasing can impact your focus on the info. flash cards or repetition is helpful in the memory process