Which of the Following Is the Best Description of a Double-Blind

Multiple Choice

Which of the following is the best description of a double-blind experiment?

A) an experiment in which both the investigators and the subjects are hidden from the others' views
B) an experiment in which neither the investigators nor the subjects know the others' names
C) an experiment in which neither the investigators nor the subjects know how the treatments have been assigned
D) an experiment in which the subjects are blindfolded so they cannot see which treatment is applied to them