Mud from a lake on an uninhabited wooded island in northern Lake Superior contains toxic chemicals, including toxaphene, a banned pesticide for cotton that previously was manufactured and used, not in nearby regions of Canada or the northern United States, but in the southern United States. No dumping has occurred on the island. The island lake is sufficiently elevated that water from Lake Superior does not reach it.
The statements above, if true, most strongly support which of the following hypotheses?

Question

Examsnet · Accepted Answer

Correct Answer is :  The toxaphene was carried to the island in the atmosphere by winds.

GMAT Verbal Reasoning Practice Test 7