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Difficulty:
45%
(medium)
Question Stats:
66% (01:34) correct
34%
(01:34)
wrong
based on 873
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No botanist lives long enough to study the complete life cycle of an individual California redwood tree. Nevertheless, by observing many trees at different stages, botanists can piece together the evolution of a single tree. Exactly the same principle applies in astronomy to the study of the life-story of globular clusters, huge spherical aggregations of about a million stars all swarming about each other.
Which of the following is an assumption made in the passage above?
A. The methods of scientists in one field generally carry over to other fields even if the subject matter is vastly different.
B. Obserations of the life cycle of a single individual have little value in scientific studies.
C. Globular clusters at different stages of development are accessible to astronomers for observation and study.
D. There are globular clusters that have not so far been detected by astronomers.
E. Redwoods and globular clusters must both be studied intensively now, while they still exist in sufficient number
Which of the following is an assumption made in the passage above?
A. The methods of scientists in one field generally carry over to other fields even if the subject matter is vastly different.
B. Obserations of the life cycle of a single individual have little value in scientific studies.
C. Globular clusters at different stages of development are accessible to astronomers for observation and study.
D. There are globular clusters that have not so far been detected by astronomers.
E. Redwoods and globular clusters must both be studied intensively now, while they still exist in sufficient number
The OA is C, but why A in wrong?????
help me ASAP please!!!
it's really urgent
help me ASAP please!!!
it's really urgent
06 Jul 2013, 01:35
Kudos
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PREMISE: By observing many trees at different stages, botanists can piece together the evolution of a single tree.
ARGUMENT: Exactly the same principle applies in astronomy to the study of the life-story of globular clusters.
By observing many clusters at different stages => they can determine the evolution.
Which of the following is an assumption made in the passage above?
A. The methods of scientists in one field generally carry over to other fields even if the subject matter is vastly different.
Even if the methods generally do not carry over (A negated), the argument could still be valid. In this fields this can be done, but in the others it cannot be done.
C. Globular clusters at different stages of development are accessible to astronomers for observation and study.
C if negated destroys the connection needed for the conclusion. C is the assumption required because if
C-Negated. Globular clusters at different stages of development are NOT accessible to astronomers for observation and study.
they cannot determine the evolution by observing the clusters (clearly).
B. Obserations of the life cycle of a single individual have little value in scientific studies.
D. There are globular clusters that have not so far been detected by astronomers.
E. Redwoods and globular clusters must both be studied intensively now, while they still exist in sufficient number.
The other options are easy to eliminate: the value in scientific studies is nowhere mentioned in the passage (B); D and E do not affect the conclusion at all.
ARGUMENT: Exactly the same principle applies in astronomy to the study of the life-story of globular clusters.
By observing many clusters at different stages => they can determine the evolution.
Which of the following is an assumption made in the passage above?
A. The methods of scientists in one field generally carry over to other fields even if the subject matter is vastly different.
Even if the methods generally do not carry over (A negated), the argument could still be valid. In this fields this can be done, but in the others it cannot be done.
C. Globular clusters at different stages of development are accessible to astronomers for observation and study.
C if negated destroys the connection needed for the conclusion. C is the assumption required because if
C-Negated. Globular clusters at different stages of development are NOT accessible to astronomers for observation and study.
they cannot determine the evolution by observing the clusters (clearly).
B. Obserations of the life cycle of a single individual have little value in scientific studies.
D. There are globular clusters that have not so far been detected by astronomers.
E. Redwoods and globular clusters must both be studied intensively now, while they still exist in sufficient number.
The other options are easy to eliminate: the value in scientific studies is nowhere mentioned in the passage (B); D and E do not affect the conclusion at all.
General Discussion
15 Jan 2017, 05:10
Kudos
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ankujgupta
Try to break the argument down -
Premise 1 - Biologists don't live long enough --> Hence, cannot study the life cycle of single redwood tree.
Premise 2 - they can study other redwood trees at different stages --> Hence, they can piece together the life cycle of a redwood tree.
this line of reasoning is then paralleled in the case of globular clusters.
Premise 3 - Astronomers don't live long enough --> hence, cannot study the life cycle of a single cluster.
conclusion - they can piece together the life cycle of a globular cluster.
Obviously, what is the missing piece here? It is the assumption/premise that they can study other clusters at different stages of their life cycle.
the only option that does this is option C.
Option A - not necessarily true.
the passage talks about ONLY two fields - biology and astronomy. We have no idea whether this principle is true between other fields.
Also, the paragraph in the question talks about ONLY one method - observation of similar things. We do not know whether other methods carry over as well.
Moreover, the "principles" are the same, not necessarily the "methods" used.
Option B - incorrect.
We have no idea whether such observations have "little value".
Option C - correct answer.
If such clusters are NOT available, then we cannot apply the same principle. i.e. we cannot infer about one cluster based on the observations of other such clusters.
Option D - incorrect.
We have no data about this.
Option E - incorrect.
We have no data about this.
