Answer:
participants were not allowed to withdraw without penalty.
Step-by-step explanation:
Ethical violation: The term ethical violence refers to the violence of the mentioned ethical values in APA i.e, American Psychological Association while conducting particular research.
A researcher should look for various ethical guidelines while researching informed consent, respect for confidentiality and anonymity, beneficence, respect for privacy, etc. Along with all this, it should be written that a participant can withdraw from research any time he or she wants to.
In the question above, the ethical violation is best described as participants were not allowed to withdraw without penalty.