VamosRafa19 wrote:I picked A, after eliminating all other answer choices. I see now that per the comment above B is supported by "prevent soil erosion that clogs rivers with silt", which I guess you're also supposed to make the leap that silt has a negative impact on water based transportation (what if you can still move through water fine with silt?). Anyway - after eliminating all the bad answers, I felt that A was slightly supported by "plant species yet to be discovered may contain agents with unique disease-fighting properties" which I realize is not perfect, but feels more supportable to me than B. If plants may have curative properties, then it's possible some diseases that affect plants affect humans. Could someone explain why B is better than A?
Hi, i picked the same wrong choice A, and since no one replied yet, i want to ask about the same question and add my own explanation here. A could be wrong for couple reasons: 1. Literally if as A said, "disease affect plant also affect human", i felt it's saying there is possibility that plant disease could transfer to human. Which is very opposite to the main idea of that paragraph and not supported as well. 2. The passage only said plants could have disease fighting property, not necessarily mean they have disease first, then own those properties. So answer choice A is not supported by the passage.
For the correct answer choice B, there are more support from the passage than A. Since the passage said forest "prevent soil erosion clogs river", so without forest, the soil might clog river, and by imagining river being clogged, the river bed could be raised and any boat or things transporting through the river could be stuck into the mud. Or a single part of river being clogged that blocked in the middle of a river. No additional information outside the passage needed to get to this answer compared to A.
Not sure if these are correct, but hopefully can be helpful in some aspect.