Answer:
Potential undue influence or coercion of subjects
Step-by-step explanation:
Coercion means influencing or making somebody to act or do something by forceful means or by threatening them.
In the context, a researcher requires human subjects to investigate or do a study on his research on the affect of alcohol intoxication in the behavioral changes of them. For this he will pay $600 to the subjects for testing them for 6 hours.
Thus before submitting the protocol to the Institutional Review board, (IRB), he must be careful to note that none of his subjects either influenced forcefully or threaten to participate in his research work.