Respuesta :
You didn't include any of answer choices but i can guarantee you its whichever one that has to do with Christopher getting distracted and not concentrating on his studying. Not taking proper notes, or just general bad studying habits.
Answer:
In the week leading up to the exam, Christopher skipped his regular workouts, replacing them with extra study sessions.
Explanation:
I just took a test with this question and this is the right answer.
