When names are removed from questionnaires and are replaced with identification numbers so that only the researcher can later link a response to a particular name, the researcher should tell the respondent that the information is

When names are removed from questionnaires and are replaced with identification numbers so that only the researcher can later link a response to a particular name, the researcher should tell the respondent that the information is confidential.

Explanation:

When conducting confidential research it is remarkably important that researchers maintain private and protect the participants' identities with techniques such as the one mentioned in the case above. Participants expect investigators to not divulge without permission their personal information given in a confidential interview.

d. everyone should be treated fairly.