Environmental scientist:
Following a recent vote on new conservation legislation, ethical pike fishing will be allowed in Great White Bear Lake based on economic considerations. Many local environmental activists are excited about this change, pointing out that a reduction in the pike population will bring about an increase in the population of Arctic charr, which has been experiencing a drastic decline over the past few years. Admittedly, the new conservation legislation will not have that effect: a decrease in the pike population will trigger a surge in predation pressure on Arctic charr from burbot, which is the lake's dominant predatory fish species.
In the argument given, which of the following roles do the two portions in boldface play?
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radio_button_unchecked(A) The first is a piece of evidence that backs the position that the author tries to establish; the second is another piece of evidence that casts doubt on that position.
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radio_button_unchecked(B) The first contains an alternative position that is opposite to the main one that the environmental scientist tries to establish; the second is the position that the environmental scientist argues for.
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radio_button_unchecked(C) The first is a piece of evidence that supports the position that the environmental scientist seeks to establish; the second is that position.
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radio_button_unchecked(D) The first is a circumstance that supports the position that the environmental scientist aims to establish; the second is another circumstance that plays the same role in the argument as the first one.
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radio_button_unchecked(E) The first is a fact that helps the environmental scientist prepare a context for the argument; the second provides another fact that provides support for the position that the environmental scientist aims to establish.