VR - 92 - the non-underlined part (Experts, please help)

This topic has expert replies
Master | Next Rank: 500 Posts
Posts: 341
Joined: Sun Mar 25, 2012 6:59 pm
Thanked: 17 times
Followed by:4 members
GMAT Score:720
Schistosomiasis, a disease caused by a parasitic worm, is prevalent in hot, humid climates, and it has become more widespread as irrigation projects have enlarged the habitat of the freshwater snails that are the parasite's hosts for part of its life cycle.

(A) the freshwater snails that are the parasite's hosts for part of its life cycle

(B)the freshwater snails that are the parasite's hosts in part of their life cycle

(C)freshwater snails which become the parasite's hosts for part of its life cycles

(D)freshwater snails which become the hosts of the parasite during the parasite's life cycle

(E) parasite's hosts, freshwater snails which become their hosts during their life cycles

My question is not regarding the underlined, but rather the Non-Underlined part that I have highlighted. Why do we need an "it" to refer back to Schistosomiasis when we clearly know that we are talking about Schistosomiasis. On several occasions GMAT has made it clear that such type of pronoun reference is considered redundant. Seems like GMAT is violating its own rule..unless I am missing something here
Last edited by ice_rush on Sat Apr 14, 2012 8:20 am, edited 1 time in total.
Source: — Sentence Correction |

User avatar
GMAT Instructor
Posts: 1248
Joined: Thu Mar 29, 2012 2:57 pm
Location: Everywhere
Thanked: 503 times
Followed by:192 members
GMAT Score:780

by Bill@VeritasPrep » Sat Apr 14, 2012 8:17 am
The sentence is using two independent clauses linked with ", and..."

This means that we need a subject after the conjunction. We can use "it" rather than repeating the name of the disease.
Join Veritas Prep's 2010 Instructor of the Year, Matt Douglas for GMATT Mondays

Visit the Veritas Prep Blog

Try the FREE Veritas Prep Practice Test

User avatar
Master | Next Rank: 500 Posts
Posts: 287
Joined: Fri Mar 23, 2012 12:33 am
Location: Pune,India
Thanked: 60 times
Followed by:6 members

by GMAT Kolaveri » Sat Apr 14, 2012 8:18 am
ice_rush wrote:Schistosomiasis, a disease caused by a parasitic worm, is prevalent in hot, humid climates, and it has become more widespread as irrigation projects have enlarged the habitat of the freshwater snails that are the parasite's hosts for part of its life cycle.
Schistosomiasis(subject),..., is(verb) prevalent and it( it acts as subject) has become...

Hence the two elements joined by AND are Parallel
Regards and Thanks,
Vinoth@GMAT Kolaveri
https://www.facebook.com/GmatKolaveri
https://gmatkolaveri.tumblr.com/

Click the thank you button if you like my reply :)

Master | Next Rank: 500 Posts
Posts: 341
Joined: Sun Mar 25, 2012 6:59 pm
Thanked: 17 times
Followed by:4 members
GMAT Score:720

by ice_rush » Sat Apr 14, 2012 8:48 am
Hi Bill,
I see the point you are making, but how about we look at a simpler sentence:

John is a graduate of Stanford and he works at Facebook.

John is a graduate of Standford and works at Facebook.


Which out of the 2 would be correct on the GMAT?



Thanks,

Legendary Member
Posts: 784
Joined: Sun Apr 03, 2011 3:51 am
Thanked: 114 times
Followed by:12 members

by patanjali.purpose » Sat Apr 14, 2012 9:15 am
ice_rush wrote:Schistosomiasis, a disease caused by a parasitic worm, is prevalent in hot, humid climates, and it has become more widespread as irrigation projects have enlarged the habitat of the freshwater snails that are the parasite's hosts for part of its life cycle.
The sentence could go either way - we can take a clue from USE OF COMMA. Following sentences are CORRECT:

1) Schistosomiasis, a disease caused by a parasitic worm, is prevalent in hot, humid climates, and IT has become more widespread as irrigation projects - NOTE: USE OF COMMA BEFORE AND. THIS SIGNIFIES THAT AN INDEPENDENT CLAUSE IS NEXT TO COME

2) Schistosomiasis, a disease caused by a parasitic worm, is prevalent in hot, humid climates AND has become more widespread as irrigation projects - NOTE: USE OF NO-COMMA BEFORE AND. THIS SIGNIFIES THAT A NEW VERB IS NEXT TO COME


Therefore, IMO (Bill pls correct me)
John is a graduate of Stanford and he works at Facebook - NOT CORRECT

John is a graduate of Standford and works at Facebook. - CORRECT

John is a graduate of Stanford ,and he works at Facebook - CORRECT (WE NEED COMMA BEFORE AND)

Master | Next Rank: 500 Posts
Posts: 341
Joined: Sun Mar 25, 2012 6:59 pm
Thanked: 17 times
Followed by:4 members
GMAT Score:720

by ice_rush » Sat Apr 14, 2012 9:40 am
don't think comma is an issue here...personally, i think both are correct, but the 2nd sentence is more concise..Waiting for Bill to provide his inputs.

User avatar
GMAT Instructor
Posts: 1248
Joined: Thu Mar 29, 2012 2:57 pm
Location: Everywhere
Thanked: 503 times
Followed by:192 members
GMAT Score:780

by Bill@VeritasPrep » Sat Apr 14, 2012 11:23 am
ice_rush wrote:Hi Bill,
I see the point you are making, but how about we look at a simpler sentence:

John is a graduate of Stanford and he works at Facebook.

John is a graduate of Standford and works at Facebook.


Which out of the 2 would be correct on the GMAT?



Thanks,
Both are fine grammatically, and on the GMAT it is extremely unlikely that you would ever have to choose between them. If you did, though, I would go with the one that is closer to the original sentence.

We do need a comma before "and" in the first example. Whenever a coordinating conjunction (and, but, or, so, etc.) is used to link two independent clauses, it should be preceded by a comma.
Join Veritas Prep's 2010 Instructor of the Year, Matt Douglas for GMATT Mondays

Visit the Veritas Prep Blog

Try the FREE Veritas Prep Practice Test

• Page 1 of 1