Each of the following is supported by one or both of the passages EXCEPT:

allisonchetta November 14, 2017

Can someone help explain this?

Hi, where specifically does the passage address government regulation for all ingredients in drilling muds?

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hannah93092 May 17, 2018

I am curious about this as well - was able to get to answer (B) via elimination, but I am not 100% sure how (B) is correct. Thanks!

Anita May 18, 2018

In this case, we're looking for what ISN'T supported by the passage. The best way to tackle these is usually process of elimination. Cross off the ones you know they mentioned and then check the others.

Government-required disclosure is not confirmable in the passage, so B is correct. In fact, passage A mentions that the fluids' ingredients are often kept secret, which indicates that not only is B not supported, it's probably unlikely. However, you don't need to be that certain; just not being addressed/supported is enough.

hannah93092 May 18, 2018

Thanks!