Hi there! After reading the forum here I can understand why D is correct.
But, I picked E. (which apparently only 2% of people do) so my thinking was clearly wonky here.
Here is my thoughts: I need to supply an answer that validates why oral traditions are preferable to written ones.
Some of the key statements in my opinion are: "writing has no limits, it can proliferate to the point where writer and reader
both become confused" and "Since oral traditions are dependent on memory, what is useless and irrelevant is quickly eradicated" which to me is suggesting that written traditions don't eradicate useless/irrelevant stuff, therefore they might contain these things.
Answer D contains a similar structure to the conclusion, mainly they both have one thing being preferable to another. But to me answer E is articulating something something the author doesn't explicitly say: that oral traditions are more efficient and accurate. Albeit that isn't synonymous with 'clarity'. But the answer still supports that oral traditions are preferable, because they're presented as being clearer than written; they're less convoluted/twisted.
Is the big problem then that "Ideas that cannot be discussed clearly
should not be discussed at all."? That is a bit of a stretch, and definitely not something the author suggests.
I'm rambling, but let me know what the obvious problem with E is