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31 Aug 2019, 07:40
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
63% (02:02) correct
37%
(02:11)
wrong
based on 283
sessions
History
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Not Attempted Yet
Solutional caves are formed in the earth when a soft rock, usually limestone, is eroded by rainwater that has mixed with soils and carbon dioxide to form carbonic acid. Troglotopia Cave and the surrounding earth contain low amounts of soft rock, so it is not a solutional cave.
For purposes of evaluating the argument it would be most useful to establish which of the following?
A. Whether soft rock is commonly eroded by any substance other than carbonic acid
B. Whether carbonic acid commonly erodes away most of the soft rock in a given area
C. Whether rainwater that mixed with soils and atmosphere ever forms an acid other than carbonic acid
D. Whether Troglotopia Cave is of a shape commonly seen in caves known to be solutional caves
E. Whether there are areas of soft rock where caves commonly fail to form even when exposed to carbonic acid
For purposes of evaluating the argument it would be most useful to establish which of the following?
A. Whether soft rock is commonly eroded by any substance other than carbonic acid
B. Whether carbonic acid commonly erodes away most of the soft rock in a given area
C. Whether rainwater that mixed with soils and atmosphere ever forms an acid other than carbonic acid
D. Whether Troglotopia Cave is of a shape commonly seen in caves known to be solutional caves
E. Whether there are areas of soft rock where caves commonly fail to form even when exposed to carbonic acid
ArtVandaley
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31 Aug 2019, 08:45
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Seems B. The way I approach evaluate questions is that, either the statement or its logical opposite must weaken the argument.
B says that acid erodes most of the soft rock, hence only few will remain. Hence weakens the argumentt that "since it has low amount of soft rock, it's not solutional cave"
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B says that acid erodes most of the soft rock, hence only few will remain. Hence weakens the argumentt that "since it has low amount of soft rock, it's not solutional cave"
Posted from my mobile device
Ans B
Yes- If carbonic acid commonly DOES erodes away most of the soft rock in a given area- there will be little rock available
No- If no carbonic acid does NOT commonly erodes away most of the soft rock in a given area- there will be plenty rock
Yes- If carbonic acid commonly DOES erodes away most of the soft rock in a given area- there will be little rock available
No- If no carbonic acid does NOT commonly erodes away most of the soft rock in a given area- there will be plenty rock
