If the OG explanation is wrong in case of option (E), then Could you please tell me what is the right explanation for (E) being wrong.
the one thing i see that's easiest to summarize in (e) is verb tense. that choice says that the law "was" an observation about electric current. that's incorrect; the law
is such an observation, and will be forever and ever. for such timeless facts, the present tense is used.
another example:
medieval doctors were the first to discover that blood circulated through the body --> incorrect; this implies that blood no longer circulates in this way
medieval doctors were the first to discover that blood circulates through the body --> correct
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also, there's the way in which essential modifiers (here, "that...") are used: they must
narrow the scope of whatever they modify. i.e., they can't give a description of something already inherent.
for instance,
an alligator that is a reptile.... is nonsense, because all alligators are reptiles -- i.e.. this modifier doesn't narrow the word "alligator", so an essential modifier is inappropriate. (an appositive --
an alligator, a reptile that... -- would be fine.)
so, here, the modifier is inappropriate because it is not narrowing "one of kirchhoff's laws"; the modifier is giving a complete characterization of that law.
Ron has been teaching various standardized tests for 20 years.
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