Within psychological research, ethical guidelines are established to ensure the welfare of participants and the integrity of the research itself. These guidelines cover issues such as informed consent, confidentiality, and the right to withdraw from a study. Notably, the American Psychological Association (APA) has set a framework to protect human subjects in psychological research. In a hypothetical situation, a researcher uses deception in their study to investigate the effects of stress on performance. According to ethical standards, which of the following best describes a key requirement that must be satisfied when using deception in psychological research?