A recent examination of the waters of the Southern Ocean showed a substantial increase in pollution levels, which is usually caused by routine oil spills during industrial drilling operations in the area. Last month, an article published in the biannual newsletter of a prominent environmental organization attributed this increase to the operations of Gaston Inc., an oil company with several large deep-water drilling operations. This claim is not undermined by the finding that
none of Gaston Inc.’s oil plants in the Southern Ocean had any oil spills, because ____________.
A. most increases in the pollution levels of oceans take place because of deep-water drilling operations
Since Gaston has other drilling projects and none of those projects caused the oil spills, as mentioned in the premise. Hence incorrect
B. oil usually floats several feet below the surface of the ocean rather than at the surface itself
Same reasoning as A. If this was true, then all the other Gaston drilling projects would have caused oil spills. Hence eliminated
C. pollutants that enter the ocean sometimes take decades to affect the marine environment
Irrelevant. Eliminated
D. tankers that transport oil from drilling plants to offshore locations often develop leaks.
This might be the case because the drills are not causing the oil spills but the fault is in the transportation of the oil.
E. calculated amounts of oil are sometimes deliberately discarded by oil plants to maintain water pressure in the area surrounding the plan
Same reasoning as A. If this was true, then all the other Gaston drilling projects would have caused oil spills. Hence eliminated