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The question asks us to identify the pair of rivers and their tributaries that is not correctly matched. Let`s dissect each option to better understand the correct answer.
Option 1: Godavari and Indravati. The Godavari river is indeed connected to the Indravati river. So, option 1 is correctly matched.
Option 2: Ganga and Penganga. The Ganga is a major river in northern India, but the Penganga river is not its tributary. The correct answer is option 2 because it is not correctly matched.
Option 3: Krishna and Bhima. The Krishna river is connected to the Bhima river. So, option 3 is correctly matched.
Option 4: Luni and Sukri. The Luni river is indeed connected to the Sukri river. So, option 4 is correctly matched.
In conclusion, options 1, 3, and 4 are correctly matched pairs of rivers and tributaries. However, option 2 is not correctly matched, making it the correct answer.