Gmat Prep Question pack Each Issue in SC

[richachampion]

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 their

[richachampion]

My Query:

In the officially correct answer, which is D, How come each and contributing in harmony?

Because contributing is not a verb, but participial form, and "each" requires a bonafide verb. Isn't it?

Also, Please analyse the correct answer, which is E.

[DavidG@VeritasPrep]

My Query:

In the officially correct answer, which is D, How come each and contributing in harmony?

Because contributing is not a verb, but participial form, and "each" requires a bonafide verb. Isn't it?

Also, Please analyse the correct answer, which is E.

"Each contributing" is an absolute phrase, a noun phrase that functions as a modifier but is not itself a clause, and so requires no verb. (Notice that the absolute phrase follows an independent clause, so we don't have to worry about the possibility that we're dealing with a sentence fragment here.)

[DavidG@VeritasPrep]

Also, Please analyse the correct answer, which is E.

each of which contribute is incorrect because "each" is a singular subject and "contribute" is a plural verb. Moreover according to their is problematic as the plural possessive pronoun "their" seems to refer to the singular antecedent "each."