Anthony is evaluating an IRB protocol that details a social psychology study on conformity. The researcher would like to conduct his work in the county jail. A review of the IRB protocol reveals that the researcher anticipates providing compensation to the sheriff, rather than to the inmates who would be the participants. However, the inmates would be participating voluntarily. 

For which of the following principles would this protocol be most concerning? Group of answer choices

justice 

beneficence 

respect for persons 

equity