Test: LSAT Logical Reasoning

Scientist: Much of the marine life has been dying along the coastline for decades. The introduction of foreign fish began thirty years ago, with a small aquaculture development in the southern part of the region. Returning the marine environment to the way it was a century ago will allow a more diverse amount of species to flourish in these waters.

1.

Which of the following is a necessary assumption of the scientist’s argument?

Foreign fish species are easily eradicated from the coastline’s marine environment.

The introduction of foreign fish was done to intentionally harm local fish species.

The native fish species should have been able to handle the foreign fish species much better.

Native fish species are far superior to the foreign fish species found in this particular coastline.

The foreign fish species have been harming a number of native, local marine species.

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