यदि केवल एक कारक का प्रभाव जानना हो तो अन्य कारकों के साथ क्या करना चाहिए?
What should be done with other factors if the effect of only one factor is to be studied?
Explanation opens after your attempt
C. उन्हें समान रखना चाहिएThey should be kept the same
Concept
Keeping other factors the same makes the effect of the independent variable clear. This is called a fair test.
Why this answer is correct
The correct answer is C. उन्हें समान रखना चाहिए / They should be kept the same. Keeping other factors the same makes the effect of the independent variable clear. This is called a fair test.
Exam Tip
अन्य कारकों को समान रखने से स्वतंत्र चर का प्रभाव स्पष्ट होता है। इसे निष्पक्ष जांच कहते हैं।
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