I took the qualifier to be significant and chose answer A because of it ... the explanation makes a lot more sense.

I totally missed the fact that the rodents are also poisoned ... ugh makes sense now!

E is wrong because we do not know what the artist themself intended.

C is right because the passage provides evidence for what the painting was likely like at the end of the artist's lifetime

OMG, I read the question way too fast ...

A passage that is purely descriptive does not lead to a prescriptive answer choice

You can do this! My first practice test was a 146 but once I started studying, I started PT'ing a lotttt better!