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Consider the following assertion:
In the Pleistocene period either the Yamuna once flowed into the Indus, or the Sutlej flowed into the Yamuna and one major tributary of either had shifted from the Ganga to the Indus or vice versa.
Which of the following is/are the basis of the above assertion?
Select the answer using the code given below:
Correct Answer: D — 3
Explanation:
The question asks for the basis of the palaeodrainage assertion.
Only statement 3 is correct. The presence of the same dolphin species in both the Indus and Ganga river systems is evidence of an older river connection or channel shift. Therefore, statements 1 and 2 are not correct.