honchos
In his experiments with gravity, Isaac Newton showed how the motion of each planet in the solar system results from the combined gravitational pull of the Sun and of all the other planets, each contributing according to their mass and distance from the others.
A. of all the other planets, each contributing according to their
B. of all the other planets, with each of them contributing according to their
C. all the other planets, each of which contributing according to its
D. all the other planets, each contributing according to its
E. all the other planets, each of which contribute according to theirOption C is incorrect, but I am trying to dig deeper into this option.
This option is debated on various forums -
C. all the other planets, each of which contributing according to its
Some Author says that which must be followed by a verb and contributing is participial not verb, but my questions if instead of this Option C would have used a bonafide verb then would this option be true? Because in that case it will be case of run on sentence. IC, IC. I believe even then this would a wrong option because of structure - IC, IC.
Dear
honchos,
I'm happy to respond.

First of all, I will request that, when you post a question, you always cite the source. I had to do a bit of searching on the web to determine that this is a GMATPrep question. It's a courtesy to provide that information when you post the question.
This question gets into what
MGMAT likes to call "
Subgroup Modifiers." First of all, a few grammar basics. I will adopt your abbreviations:
IC = independent clause
DC = dependent clause or subordinate clause
As you know, if a sentence has IC, IC, it's
run-on: it needs a conjunction to join IC's.
You seem confused on the IC/DC distinction. A DC begins with either a subordinate conjunction or a relative pronoun/adverb. The principal subordinate conjunctions follow the "ON A WHITE BUS" pattern, discussed here:
https://magoosh.com/gmat/2012/top-six-gm ... orrection/Most of the relative pronouns & adverbs double as interrogative words:
who, what, which, why, when, where, why, whose, whom. The word "
that", among its many other uses, is also a relative pronoun.
When "
that" or "
which" or "
who" or etc. is followed by a verb, that is a bonafide DC. On the one hand, a DC is a totally legitimate clause and needs a subject and a full verb: a participle is not going to do. On the other hand, the structure IC DC is NOT a run-on sentence. The relative pronoun "
that" or "
which" or "
who" acts as the subject of the DC.
Now, in the "subgroup modifier" case, we still have a bonafide DC. Here, we get constructions such as
some of which
most of which
many of which
none of which
each of which, etc.
This is a sophisticated structure, and even though the "
which" is hidden in the prepositional phrase, it still begins a full bonafide DC. That's what we would have if we changed the participle in
(C) to a full verb.
C.
all the other planets, each of which contributing according to its = a classic GMAT SC mistake pattern!!
[relative pronoun] + [participle] --- this is 100% wrong and people always fall for it! Once again, "
which" is a relative pronoun and begins a DC, and like any clause, a DC demands a full verb, not a participle.
C2.
all the other planets, each of which contributes according to its = perfectly correct
D.
all the other planets, each contributing according to its = perfectly correct
These issues get even a little more complicated with absolute phrases. See question #2 at:
https://magoosh.com/gmat/2013/absolute-p ... -the-gmat/Does all this make sense?
Mike