Early practitioners of the natural sciences developed methods to remove distortions caused by either the research environment or the researcher. Such methods, especially with respect to the researcher, were considered to (i)____________ those (ii)____________ subjectivity whose unbridled expression was thought to otherwise (iii)____________ research. A. restrain B. incursions of C. corrupt D. reveal E. restrictions on F. justify G. disguise H. acknowledgements of I. expedite