अधिगम में प्रयत्न व भूल के � – McqOptions

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1.	अधिगम में प्रयत्न व भूल के सिद्धान्त का प्रतिपादन किसने किया -
A.	पावलोव
B.	हेगार्टी
C.	थॉर्नडाइक
D.	हल
Answer» D. हल

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