Before 1986 physicists believed they could describe the

Question

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 1970s.
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
in which many other exciting and productive
ideas in theoretical physics were developed

Siddharth · Answer

IMO B

sprtng · Answer

agree with B, but i think A is also irrelevant as the passage didn't mention anything about before 1970s.

Erukumk · Answer

A is not totally irrelevant

B says that, the previous experimental results are not incompatible to the notion of the fifth element and hence the results were not comprehensive.

Option A strengthens the conclusion by saying that the equipment used for earlier experiments was not sophisticated, due to the new equipment the discovery of the fifth force was possible

A for me.

What is OA??

BM · Answer

Between A and B, option B is better. B makes it even more probable that there is a fifth element. If A stated "1980s" instead of "1970s," then I would have hesitated.

vibhaj · Answer

B from me too.it helps the premise and provide another evidence to support the conclusion the 5th force was alyways present.
if we say it were not presentl then conclusion would be weakened : hiw come it was nit present before??in natual setting things have to be prent beforehand rather the popping up at or sfter a ooint in time.things may ir may not be discovered but they would have to be predent if something fundamental like this is proposed.
c.f. Forces of gravity. ee can't say the came into being when Newton discovered.

Posted from my mobile device

amit2k9 · Answer

its a clean B,the only one effecting the argument conclusion.

garimavyas · Answer

B is simple and straight forward. but this consumed 2:11 min

crackHSW · Answer

Simple B, doesnt look like a 700+ question

VerbalBot · Answer

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Before 1986 physicists believed they could describe the

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