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# Anne: Halley s Comet, now in a part of its orbit relatively

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Anne: Halley s Comet, now in a part of its orbit relatively [#permalink]  26 Jul 2012, 10:25
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59% (02:06) correct 40% (01:32) wrong based on 198 sessions
Anne: Halley’s Comet, now in a part of its orbit relatively far from the Sun, recently flared
brightly enough to be seen by telescope. No comet has ever been observed to flare so far
from the Sun before, so such a flare must be highly unusual.
Sue: Nonsense. Usually no one bothers to try to observe comets when they are so far from
the Sun. This flare was observed only because an observatory was tracking Halley’s Comet
very carefully. Sue challenges Anne’s reasoning by
A) pointing out that Anne’s use of the term “observed” is excessively vague
b) drawing attention to an inconsistency between two of Anne’s claims
c) presenting evidence that directly contradicts Anne’s evidence
d) offering an alternative explanation for the evidence Anne cites
e) undermining some of Anne’s evidence while agreeing with her conclusion

Main CR Qs link - cr-qs-600-700-level-131508.html
[Reveal] Spoiler: OA

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Re: CR - Method of reasoning [#permalink]  26 Jul 2012, 11:22
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mohankumarbd wrote:
Anne: Halley’s Comet, now in a part of its orbit relatively far from the Sun, recently flared
brightly enough to be seen by telescope. No comet has ever been observed to flare so far
from the Sun before, so such a flare must be highly unusual.
Sue: Nonsense. Usually no one bothers to try to observe comets when they are so far from
the Sun. This flare was observed only because an observatory was tracking Halley’s Comet
very carefully. Sue challenges Anne’s reasoning by
A) pointing out that Anne’s use of the term “observed” is excessively vague
b) drawing attention to an inconsistency between two of Anne’s claims
c) presenting evidence that directly contradicts Anne’s evidence
d) offering an alternative explanation for the evidence Anne cites
e) undermining some of Anne’s evidence while agreeing with her conclusion

Main CR Qs link - cr-qs-600-700-level-131508.html

In this kind of question attack what the first one person says. Here we have something that comes casually. Infact the second one says: This flare was observed only because an observatory was tracking Halley’s Comet very carefully.

A) the word observed: is not the real reasoning behind the discussion

B) the two claims do not lack of consistency, are coherent in somehow

C) here we have no evidence at all. the second person do not present a fact but rather a conjecture

D) an alternate explanation: CORRECT. the comet is observed ONLY and ONLY and ONLy because is related to the observation of Halley's Comet

E) here nobody undermine nothing rather gives an other explanation. see D

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Re: Anne: Halley s Comet, now in a part of its orbit relatively [#permalink]  28 Oct 2013, 13:56
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Re: Anne: Halley s Comet, now in a part of its orbit relatively [#permalink]  13 Nov 2013, 22:04
This flare was observed only because an observatory was tracking Halley’s Comet
very carefully

I don't understand how this statement is an explanation and not an evidence. Sue provided an evidence that the flare was observed only because an observatory was tracking Halley's Comet very carefully. Hence, the answer choice is C and not D. Please advise.
Re: Anne: Halley s Comet, now in a part of its orbit relatively   [#permalink] 13 Nov 2013, 22:04
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