Sat 2015 Practice Test #1 Answer Explanations

Choice B is the best answer.
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“Deep Space Industries of Virginia,” and “Golden Spike of Colorado” 
to support his earlier assertion that there are many interested groups 
“working to make space mining a reality” (line 8). 
Choices A, C, and D are incorrect because the author of Passage 1 does 
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approaches to space mining. 
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Choice A is the best answer.
The author of Passage 1 explicitly states 
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earth elements: “within a few decades, [space mining] may be meeting 
earthly demands for precious metals, such as platinum and gold, and 
the rare earth elements vital for personal electronics, such as yttrium 
and lanthanum” (lines 18-22). 

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Choice B is incorrect because Passage 1 does not suggest that precious 
metals extracted from space may make metals more valuable on 
Earth. Choice C and Choice D are incorrect because Passage 1 never 
mentions how space mining could create unanticipated technological 
innovations or change scientists’ understanding of space resources. 
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Choice A is the best answer.
Lines 18-22 suggest that space mining 
may help meet “earthly demands for precious metals . . . and the rare 
earth elements vital for personal electronics.” In this statement, the 
author is stating materials (“metals,” “earth elements”) that may be 
gathered as a result of space mining, and that these materials may be 
important to Earth’s economy. 
Choices B, C, and D do not provide the best evidence for the answer to 
the previous question. Choice B is incorrect because lines 24-28 focus 
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value of water found in space. Choice D is incorrect because lines 41-44 
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lunar soil and asteroids but do not address how these resources are 
important to Earth’s economy. 
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