abhinit24 wrote:
I think it's A as it nullifies an alternate explanation.
Sent from my ONEPLUS A3003 using GMAT Club Forum mobile app
If X can lead to Y. Then there is always a possibility of Z that can also lead to Y. Hence, Z leads to Y is not a weakener.
If X led to Y. Then Z led to Y is a weakener.
I hope that answers your question.
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