After the study has been completed, the researchers should inform the participants of its purpose and the methods they used.This is in accordance to the principle of

Question

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Debriefing is the process of informing the participants about the study's purpose, the methods used, and any deception that may have occurred. This is done to ensure that the participant leaves the study without any harmful effects and is aware of the study's objectives. It is also an ethical responsibility of the researchers towards the participants, and failure to do so can lead to lawsuits against the researchers. Hence, option D is the correct choice.

After the Study Has Been Completed, the Researchers Should Inform