Skip to content
Early access — you're among the first to try PYQLabs. Share feedback
UGC NET 2019JuneMorningQ6MCQanswer keyexplanation sooneasy
Research · Research Methods
Back to ResearchPreviousNext question
  1. A.
  2. B.
  3. C.
  4. D.
double-blindexperimental researchresearch designplacebo
Next question · 2019 Q7