Paper production accounts for approximately

[vjsharma25]

This is GMATPrep problem. I couldn't find this on this forum,so posting it for discussion.

Paper production accounts for approximately 40 percent of the world's industrial use of wood, and the market for paper is growing faster than it is for all major wood products.
A. the market for paper is growing faster than it is for all
B. the market for paper is growing faster than the market for all other
C. the market for it is growing faster than it is for all other
D. its market is growing faster than the market for all
E. its market is growing faster than it is for all other

This is my line of reasoning for choosing the correct answer
Firstly,you need "all other",because if it is only "all",it will include the market for Production industry also creating an incorrect comparison.Please correct me if I am wrong.
Secondly,in original sentence the meaning of the underlined portion seems to suggest that the same market is growing for both paper production and other wood products.But the intended meaning is that the paper production market is growing faster than the market for other wood products.M I right?
Official answer to this is B.

[RonPurewal]

Firstly,you need "all other",because if it is only "all",it will include the market for Production industry also creating an incorrect comparison.

you have the right idea, although you picked the wrong specific thing -- you should be talking about excluding paper, not "the production industry", from the comparison. i.e., paper is a wood product, so you need to say "all other wood products" rather than "all wood products".
this is correct; although it's worth noting that this kind of thing is definitely not going to be the only error in a sentence -- it requires nontrivial outside knowledge (viz., the reader has to know that paper is a wood product). so, while this will allow you to eliminate, there will also be other errors in the choices -- the test is not going to contain a sentence correction problem that depends on the student's outside knowledge of facts.

Secondly,in original sentence the meaning of the underlined portion seems to suggest that the same market is growing for both paper production and other wood products.But theI intended meaning is that the paper production market is growing faster than the market for other wood products.M I right?

yes.
the pronouns "it" and "they" (along with other cases of those pronouns, such as "its", "their", "them") always refer to the intended noun plus any essential modifiers attached to that noun. so, in choice (a), the pronoun "it" erroneously refers to "the market for paper". this is an error in meaning.

note that "it"/"its" is a faulty pronoun in the last three choices; in those three choices, the intended referent of "it" is paper, but there's a problem: the noun paper isn't present in this sentence. (in the phrase "paper production", paper is an adjective.)

[vjsharma25]

Thanks a lot Ron for the crystal clear explanation.

[RonPurewal]

Thanks a lot Ron for the crystal clear explanation.

sure thing

[davetzulin]

Paper production accounts for approximately 40 percent of the world's industrial use of wood, and the market for paper is growing faster than it is for all major wood products.

D. its market is growing faster than the market for all
E. its market is growing faster than it is for all other

paper is an adjective so D/E can be striked since "production" as an antecedent does not make sense right?

[tim]

"paper production" counts as a noun. the real problem with the pronoun is we can't be sure it doesn't refer to "world's"..