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13 Apr 2009, 09:29
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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In our solar system only one of the nine planets-Earth-qualifies as fit to sustain life. Nonetheless, using this ratio, and considering the astonishingly large number of planetary systems in the universe, we must conclude that the number of planets fit to sustain some form of life is extremely large.
The argument is questionable because it presumes which one of the following without providing justification?
(A) If a planet is Earthlike, then life will arise on it.
(B) our solar system is similar to many other planetary systems in the universe.
(C) The conditions necessary for life to begin are well understood.
(D) Life similar to Earth's could evolve under conditions very different from those on Earth.
(E) Most other planetary systems in the universe have nine planets.
Source : LSAT Prep Test 31
The argument is questionable because it presumes which one of the following without providing justification?
(A) If a planet is Earthlike, then life will arise on it.
(B) our solar system is similar to many other planetary systems in the universe.
(C) The conditions necessary for life to begin are well understood.
(D) Life similar to Earth's could evolve under conditions very different from those on Earth.
(E) Most other planetary systems in the universe have nine planets.
Source : LSAT Prep Test 31
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13 Apr 2009, 10:30
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I'd guess B...? But what is the OA?
gmatavenue
13 Apr 2009, 22:08
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(A) If a planet is Earthlike, then life will arise on it. – I think this is required in the statements as if the any other planet in other solar system is like earth then life may arise on it
(B) our solar system is similar to many other planetary systems in the universe. – similarity in solar system will not help but similarity in the conditions on earth will help.
(C) The conditions necessary for life to begin are well understood. – out of scope
(D) Life similar to Earth's could evolve under conditions very different from those on Earth. – we are not talking about different conditions
(E) Most other planetary systems in the universe have nine planets. – this will not help for the argument
(B) our solar system is similar to many other planetary systems in the universe. – similarity in solar system will not help but similarity in the conditions on earth will help.
(C) The conditions necessary for life to begin are well understood. – out of scope
(D) Life similar to Earth's could evolve under conditions very different from those on Earth. – we are not talking about different conditions
(E) Most other planetary systems in the universe have nine planets. – this will not help for the argument
