Sentence Correction

The cytokines of the immune system, acting as signalers to adjacent cells, can provoke dangerous inflammation; the resultant autoimmune disease, characterized by cartilage and bone that become damaged although they are not actually attacked by the immune system, are known as "rheumatoid arthritis."



A) cartilage and bone that become damaged although they are not actually attacked by the immune system, are

B) cartilage and bone that become damaged although they are not actually attacked by the immune system, is

C) cartilage and bone that become damaged although the immune system does not actually attack them, are

D) damaged cartilage and bone although the immune system does not actually attack them, are

E) damaged cartilage and bone although they are not actually attacked by the immune system, is



Enjoy it

Did you mean to say..."Is this CR question difficult?"

You posted in the wrong section!

I would go with E.

Explanation:

1. singular - so 'is' - B and E remain
2. disease is characterized by 'damaged cartilage and bone'...not disease is characterized by 'cartilage and bone'...B out E remains

What is OA?

This is not a CR question. It is a SC question. moving it to the sc forum.

Hello fibbonnaci,

You are right! I posted the question in the wrong place!

the autoimmune disease is not characterised by cartilage and bone but by damaged cartilage
overlook A B C
between D and E what is known as "rheumatoid arthiritis" the resultant disease (singular) so is in E is appropiate.

finger crossed till OA

E...concise..subject- verb agreement between "Disease" and "is"

This is easy one and the answer should be E.
A,C and D are out because of s-v issue. Subject of second sentence is 'the resultant autoimmune disease', so we need verb 'is' and not 'are'. B is wordy. 'cartilage and bone that become damaged' can be very well changed to 'damaged cartilage and bone'.

EbrahimHashem wrote:The cytokines of the immune system, acting as signalers to adjacent cells, can provoke dangerous inflammation; the resultant autoimmune disease, characterized by cartilage and bone that become damaged although they are not actually attacked by the immune system, are known as "rheumatoid arthritis."



A) cartilage and bone that become damaged although they are not actually attacked by the immune system, are

B) cartilage and bone that become damaged although they are not actually attacked by the immune system, is

C) cartilage and bone that become damaged although the immune system does not actually attack them, are

D) damaged cartilage and bone although the immune system does not actually attack them, are

E) damaged cartilage and bone although they are not actually attacked by the immune system, is



Enjoy it

reply2spg wrote:This is easy one and the answer should be E.
A,C and D are out because of s-v issue. Subject of second sentence is 'the resultant autoimmune disease', so we need verb 'is' and not 'are'. B is wordy. 'cartilage and bone that become damaged' can be very well changed to 'damaged cartilage and bone'.

EbrahimHashem wrote:The cytokines of the immune system, acting as signalers to adjacent cells, can provoke dangerous inflammation; the resultant autoimmune disease, characterized by cartilage and bone that become damaged although they are not actually attacked by the immune system, are known as "rheumatoid arthritis."



A) cartilage and bone that become damaged although they are not actually attacked by the immune system, are

B) cartilage and bone that become damaged although they are not actually attacked by the immune system, is

C) cartilage and bone that become damaged although the immune system does not actually attack them, are

D) damaged cartilage and bone although the immune system does not actually attack them, are

E) damaged cartilage and bone although they are not actually attacked by the immune system, is



Enjoy it

Guys, Agreed E will be the answer. But what does "they refer to in the second part of the sentence? ANy thoughts? I am not able to identify a plural Noun referent!

They and Them refer to "cartilage and bone"

I think you guys have to try a little bit harder

Is 'B' the incorrect answer because of wordiness, though still grammatically correct?

My vote goes to (E).

What is OA?

I chose E too, but the official answer is B, which I'm not convinced about! The following is the official explanation for the answer:

"The lengthy intervening phrase characterized by cartilage and bone....the immune system masks the subject/verb problem. The singular subject autoimmune disease doesn't agree with the plural verb are . You can eliminate (A), (C) and (D). Choices (B) and (E) both use the correct singular verb ' , but only (B) is correct. (E) lacks the parallelism that (B) retains: that become damaged although...not actually attacked."

I got the question (and answer) from one of Kaplan online courses!

Any thoughts and comments on the official answer and explanation?

This is a copy of an official question about standing waves

The peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as "standing waves."

(A) crests and troughs that remain stationary although the air that forms them is moving rapidly, are

(B) crests and troughs that remain stationary although they are formed by rapidly moving air, are

(C) crests and troughs that remain stationary although the air that forms them is moving rapidly, is

(D) stationary crests and troughs although the air that forms them is moving rapidly, are

(E) stationary crests and troughs although they are formed by rapidly moving air, is

I have noticed that Kaplan and Newton have rewritten at least one official SC question. I suppose they are good practice, but only in the event you have exhausted OG and GMATPrep questions

I choose E too and die too

this is a question in OG 10, I have finished but I still die.

"although" in E require a previous clause