Hello

I am also curious why B is not correct, it seems so similar to A.

Is it because A says the pollen evidence corrects, while B says that they work in tandem with the historical documents?

@nishkrish, Happy to help. Let's take a look at (A) and (B). (B) says, "Analyses of historical documents, together with pollen evidence, have led to the revision of some previously accepted hypotheses regarding changes in the Irish landscape" The passage does present revisions of what historians had previously thought, but the revisions are both based on the new pollen analysis, not a combination of historical documents and pollen evidence. Thus, we can get rid of (B). (A) says, "Analysis of fossilized pollen is a useful means of supplementing and in some cases correcting other sources of information regarding changes in the Irish landscape." The conclusion of the passage states that analyzing pollen samples can supplement and correct the documentary record. This is just what (A) gives us, so it's the correct answer choice, as the main point is the same thing as the conclusion. Does this make sense? Let us know if you have any questions!

That's right, the passage does not discuss any analyses of historical documents