This is the most disgusting passage i've ever read

I had LR, LG, LR, LR, LG. How do we find out which one was the experimental section?

I apologize if this question doesn't really belong in here, but I was wondering if someone could give me insight on how similar 7sage's digital PT's are to the actual LSAT. Any insight will be much appreciated!

My thought process when answering this question

Fluctuation → dust → ice age.

so anything supporting this causal link would support.

A. no dust → no ice age before 8000 CHECK

B. asteroids dust caused dust that continues to orbit. This supports even though it doesnt mention the effect.

C. volcanic eruptions cause dust that lower the temp. VERY SUBTLE but it does support.

D. This answer choice ONLY mentions dust (not its effects) and DOES NOT mention when they started entering the earth. So, it does not strengthen the causal link. It says something periodically causes dust and that's it! I assumed that because it causes dust it contributes to the ice age and I got this wrong.

E. Cosmic debris found in the sediments around the times ice ages happened. CHECK

JY's explanation didn't make too much sense to me so I took another stab at it. I hope it helps.

The stim says "both can't be true so one of them will be true at the expense of the other." This leaves us to wonder whether they can both be false. And according to the stimulus, both can't be false.

Answer choice A says "at least one of them has an erroneous method." This means both of them could be false and AC A would still be valid. And that is not parallel with the stim.