Final answer:
Covering a television can lead to poor exam performance and interfere with a student's ability to prepare for exams. Students who watch more television tend to perform more poorly on their exams. It is important to limit television viewing and prioritize academic responsibilities.
Step-by-step explanation:
Covering a television can have several disadvantages. Firstly, it can lead to poor exam performance as watching too much television can distract students from studying and revision. Secondly, it interferes with a student's ability to prepare for exams, as the time spent on watching TV could be better utilized for studying. Lastly, students who watch more television tend to perform more poorly on their exams compared to those who watch less. Therefore, it is important for students to limit their television viewing and prioritize their academic responsibilities.