Answer:
deception.
Explanation:
Deception: In psychological research, the term deception is one of the ethical issues which is defined as a highly debatable issue related to the ethical guidelines. According to various psychologists, deception is something that leads the researcher to deceive participants who have been participated in particular research by making them uninformed or unaware of the true experiment's nature and the researcher being dishonest to his or her participants.
In the question above, the given statement represents the ethical issue which is most relevant to the experiment is deception.