In passage A, you will find it in lines 16-20, where the author talks about one argument in favor of judicial candor:
Accordingly, proponents of greater candor in the courts have argued, for example, that transparent decision making provides better guidance to lower courts and litigants, or that it strengthens the institutional legitimacy of the courts.
It's not the author's preferred argument, but it is still an argument that author indicates has some legitimacy.
In passage B, look to lines 48-50:
lack of candor is likely to be detectable, and its detection would only serve to increase public cynicism about the judicial system
That language is also about undermining the legitimacy of the courts.
I hope that clears it up! Tough passage!
Adam M. Tyson
PowerScore LSAT, GRE, ACT and SAT Instructor
Follow me on Twitter at
https://twitter.com/LSATadam