71. A good scientific research is characterized by :
(है) It requires clear articulation of a goal
(B) It follows specific plan and procedure
(C) It accepts certain critical assumptions
(D) ^ the above
72. To understand human behavior and reasons over a long period of time one has to do :
(ക) Historical जपत् (8) Quasi experimental study
(C) Longitudinal study (>) Cross sectional study
73, Teaching and learning arrangements, usually in small groups....
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