PrepTest 125, Section 1, Question 12
Passage A Drilling fluids, including the various mixtures(466 more words not shown)
Passage A(240 more words not shown)
Passage B(234 more words not shown)
According to passage B, one(12 more words not shown)
- Aare slower to(1 more words not shown)
- Bcontain greater concentrations(2 more words not shown)
- Ccontain a greater(3 more words not shown)
- Dare used for(3 more words not shown)
- Ecannot be(1 more words not shown)
Reading the passage
B gives an explicit reason for the greater potential harm: oil-based mud doesn't disperse as readily. We're looking for that stated link, not just any difference between the two muds.
Working the answers
- ACorrect
B says the greater environmental impact is due in part to their slower dispersal (Passage B, paragraph 3). Slower dispersal restates that reason.
- B
The greater concentration named in B is barite, not bentonite.
- C
B mentions additives but doesn't say oil-based mud contains a greater number of them.
- D
Deeper drilling is its use, not a stated explanation of its greater environmental harm.
- E
B doesn't say oil-based mud cannot be recycled. Describing recycling for water-based mud doesn't establish that prohibition for the other type.
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