B, its effects should be thoughtfully considered before it becomes a reality.
According to Passage 2's author, "we all stand to gain: the mineral bounty and spin-off technologies could enrich us all," space mining may be beneficial to humanity (lines 50-52). which is a positive potential.
In addition, the author emphasizes numerous times that space mining must be properly examined before being put into action: "But before the miners start firing up their rockets, we should pause for thought" (lines 53–54); "But [space mining's] consequences—both here on Earth and in space—merit careful consideration" (lines 57-59).
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