Answer:
Taking a difficult Course
Explanation:
There are several stress sources that would make a a student literally lose focus and motivation.
1. Difficult Course(s). Some students dread mathematics. When such a student fails repeatedly ,the mental stress of studying and not getting the calculations correctly could make the student quit.
2. Lack of schedule: lack of planning
3. Emotional trauma. Some student can lose focus and motivation due to tragic events in the home, divorce between parents etc
