वह अनुसंधान जिसमें शोधकर्ता का स्वतंत्र चर (independent variables) पर सीधा नियंत्रण होता है और वह उनमें हेरफेर करता है, कहलाता है:

Which of the following events is considered a major turning point that fueled Indian nationalism during British rule due to its brutal nature and widespread condemnation?

Which of the following events is considered the first major peasant uprising against the British in India?