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miag
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Hi Adit_ Its really a good question, and in the first pass, while analysing the option, we may have eliminated that one, but when we analyse for a few more times, then we can surely say that it is creating a doubt on the conclusion, because the conclusion Listening music causes sleep, whereas watching TV doesnt causes sleep, so a weakner can be Something else is causing sleep rather listening music. For me, A is a good weakner, and I will rate it 9/10, because if it had been too straightforward, then the question would have been too easy.

Other weakner can be that there is a difference in the habits of both groups, any data that says there is no cause and effect but just a correlation. Basically, whatever affects the logical gap or reasoning to arrive at a conclusion, that will be a good weakner.

Hope this helps
Adit_
Been revisiting this problem on and off for a while now and I find this question incredibly hard because of the fact that the stem says:
X does Y before Z. They dont say: they dont do anything else before Z but Y. And upon thorough analysis I also do understand that option A is the best OUT OF the 5 provided and thats all we need. But I have a question here as to how big of a weakener is it on a scale of 1 to 10?
Lets say we had another option that says like:

"Television induces sleep" or something like that (Common weakaners having come across im simply trying to apply by saying if X leads to Y, Y should not cause X as an assumption)

Which one is a stronger weakener and should be the answer here?



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According to your logic, if option A was ' People who enjoy classical music typically like to dance just before bedtime' would also be correct? Does any random action apart from classical music cast doubt? To me it sounds like we need to assume ourselves that reading leads to restful sleep
KarishmaB


No, we are not given that reading leads to better sleep. We don't need to establish it either. We just have to make ourselves doubt the conclusion. We don't have to establish that the conclusion is false and that there is another cause of good sleep. It is something like this:

All students of grade 7-A have scored very well. Ms. Danny is their class teacher. She must have taught them very well.

Now, what can make me doubt Ms. Danny's role? What if I were told, "All students of grade 7-A take extra classes with Ms. Veronica."
Will that make me doubt my conclusion? Yes. I will wonder - is Ms Danny a very good teacher or is it that Ms Veronica did a great job? It will make me think that my conclusion about Ms Danny may not be valid. That is all we need to do - weaken our conclusion, cast doubt on the conclusion.
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