If dr. johnson was a researcher with the tuskegee syphilis study, more than likely he provided treatment for all participants

If dr. johnson was a researcher with the tuskegee syphilis study, more than likely he: did not tell the participants that they were infected with syphilis

The  tuskegee syphilis study was created to observe the natural progression of syphilis if it left untreated. So all of the participants were kept out from the fact that they had a syphilis

Ithink it’s d. that should be correct.