Internal statistics.
IT department.
Finance department.
Sales department.
Colleagues.
Researchers.
Business library.
Market research.
The answer would definitely be c
1. Normal
2. Excessive
3. Normal
4. Normal
5. Excessive
If it causes you to loose sleep and not do the things you used to or makes you feels sleep then it is excessive but if you feel fine after you do the task the anxiety is about it is completely normal.
withdrawal
this means that if you get addicted to the drug you will want more and more and u will have a withdrawal if you don't take the drug again