Answer:
C. Keep notes in the same place
Step-by-step explanation:
As a diligent student, before lecture, one should, among other things;
i. skim assigned reading so as to get key terms,
ii. try as much as possible to complete assigned reading, and
iii. write down difficult questions to be asked, if any.
Keeping notes in the same place is a sign of indolence.
Hope this helps!