Answer:
Last one
Explanation:
But if you don’t believe me wait for some one else
1. D
You should try to minimize guesswork
2. C
Remaining time should be used to revise answers
3. C
Citing another person's work is allowed as long as full credit is given to the person and the citation is proper.
4. C
A cheater may never be caught but they will know they had to rely on others to complete the task or test.
The term for what you are describing is "zero sum", in which one benefits from another's loss.