Answer: The research strategy that raises the most concerns regarding the ethical principle of respecting the autonomy of research subjects and the corresponding federal regulations requiring informed consent is letter D. A researcher proposes to join a moderated support group for cancer survivors posing as a survivor. She plans to insert comments to see how members respond.
Explanation: First of all, the researcher is lying. She is posing as a cancer survivor when in reality she isn't, and all the information she plans on recollecting derives from that lie. Second of all, the research subjects are not aware that she is conducting a study in which they are essentially one of the variables, therefore there's not much-informed consent in this particular research.
In conclusion, the research strategy that raises the most ethical concerns is D.