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Before 1986 physicists believed they could describe

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Before 1986 physicists believed they could describe [#permalink]

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Before 1986 physicists believed they could describe the universe in terms of four universal forces. Experiments then suggested, however, a fifth universal force of mutual repulsion between particles of matter. This fifth force would explain the occurrence in the experiments of a smaller measurement of the gravitational attraction between bodies than the established theory predicted.

Which one of the following, if true, most strengthens the argument that there is a fifth universal force?

A) The extremely sophisticated equipment used for the experiments was not available to physicists before the 1970’s.
B) No previously established scientific results are incompatible with the notion of a fifth universal force.
C) Some scientists have suggested that the alleged fifth universal force is an aspect of gravity rather than being fundamental in itself.
D) The experiments were conducted by physicists in remote geological settings in which factors affecting the force of gravity could not be measured with any degree of precision.
E) The fifth universal force was postulated at a time during which many other exciting and productive ideas in theoretical physics were developed.
[Reveal] Spoiler: OA

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Re: Before 1986 physicists believed they could describe [#permalink]

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New post 29 Sep 2014, 11:07
B seems best here: No previously established scientific results are incompatible with the notion of a fifth universal force.----->the fact that no previously established results are incompatible with the this 5th force is indicative of its existence.
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Re: Before 1986 physicists believed they could describe [#permalink]

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New post 29 Sep 2014, 21:19
kinjiGC wrote:
Before 1986 physicists believed they could describe the universe in terms of four universal forces. Experiments then suggested, however, a fifth universal force of mutual repulsion between particles of matter. This fifth force would explain the occurrence in the experiments of a smaller measurement of the gravitational attraction between bodies than the established theory predicted.

Which one of the following, if true, most strengthens the argument that there is a fifth universal force?

A) The extremely sophisticated equipment used for the experiments was not available to physicists before the 1970’s.
B) No previously established scientific results are incompatible with the notion of a fifth universal force.
C) Some scientists have suggested that the alleged fifth universal force is an aspect of gravity rather than being fundamental in itself.
D) The experiments were conducted by physicists in remote geological settings in which factors affecting the force of gravity could not be measured with any degree of precision.
E) The fifth universal force was postulated at a time during which many other exciting and productive ideas in theoretical physics were developed.



Answer is B for sure.

This statement directly says that the previous theories / experimental results show no incompatibility with the existence of the fifth force. This implies that the forces existed during previous experiments and hence strengthen the conclusion.
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Re: Before 1986 physicists believed they could describe [#permalink]

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New post 08 Mar 2017, 23:42
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Before 1986 physicists believed they could describe [#permalink]

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New post 09 Mar 2017, 08:04
Before 1986 physicists believed they could describe the universe in terms of four universal forces. Experiments then suggested, however, a fifth universal force of mutual repulsion between particles of matter. This fifth force would explain the occurrence in the experiments of a smaller measurement of the gravitational attraction between bodies than the established theory predicted.

Which one of the following, if true, most strengthens the argument that there is a fifth universal force?

A) The extremely sophisticated equipment used for the experiments was not available to physicists before the 1970’s.
The argument is discussing about the viability of the theroy of the fifth force and argues about its existance and not the scientific method to discover it.

B) No previously established scientific results are incompatible with the notion of a fifth universal force.
Correct answer which supports the vability of teh fifth force and strengthens its existance by eliminating possibility of a opposite hypothesis.

C) Some scientists have suggested that the alleged fifth universal force is an aspect of gravity rather than being fundamental in itself.
out of scope.
D) The experiments were conducted by physicists in remote geological settings in which factors affecting the force of gravity could not be measured with any degree of precision.
Weakener

E) The fifth universal force was postulated at a time during which many other exciting and productive ideas in theoretical physics were developed.
out of scope
Re: Before 1986 physicists believed they could describe   [#permalink] 09 Mar 2017, 08:04
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