My brother and I say thank you

Small detail I noticed- I have PT 65 from a different book and question 26 is worded a little differently. The question stem says, "It can be inferred from the passage that if the diasease organisms mentioned in line 48..." instead of lines 46-47 i found this interesting. Has anyone else seen this before?

Wouldnt this be a science passage? How is it an art passage?