Answer:
You have lost the ability to use sustained attention.
Step-by-step explanation:
This type of attention allows the person to maintain his/her attention to a given task over a long period of time.
Once this form of attention comes into play, the individual can generally focus on a task resisting any form of fatigue or distractions. It is also related to motivation.
In this case, the individual has lost this type of attention since he/she has been rereading the same paragraph and has not been able to maintain any new information, hence he/she quits.
Since it's early in the morning, fatigue is taking over and we can see there was not a lot of motivation to begin with, since the paper is "dreaded".