Câu 648: A high school implemented a new online homework system to improve student completion rates. The administration expected that the co...

Câu 648:

A high school implemented a new online homework system to improve student completion rates. The administration expected that the convenience of doing assignments on smartphones would encourage more students to finish their work. However, after three months, the overall homework completion rate has actually dropped.

Which of the following, if true, best explains the unexpected drop in the completion rate?

A. The new system provides instant feedback on answers, which students find very helpful.

B. Teachers have assigned slightly less homework than they did before the system was introduced.

C. A significant number of students do not have reliable internet access at home.

D. The online system includes interactive elements that make the assignments more engaging.