kanha81 wrote:Migraine, the most debilitating common form of headache, afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year, and they cost the nation $50 billion in medical expenses and lost work time.

(A) year, and they cost the nation $50 billion in medical expenses and lost

(B) year and thus cost the nation $50 billion in medical expenses and lost

(C) year, so as to cost the nation $50 billion in medical expenses and lost

(D) year that costs the nation $50 billion in lost medical expenses and

(E) year, which thus cost the nation $50 billion in lost medical expenses and

My A: [spoiler][D][/spoiler]

IMO B

(A) year, and they cost the nation $50 billion in medical expenses and lost - Incorrect usage of they

(B) year and thus cost the nation $50 billion in medical expenses and lost

(C) year, so as to cost the nation $50 billion in medical expenses and lost - Sentence fragment - So introduces IC , but as introduces SC .

(D) year that costs the nation $50 billion in lost medical expenses and - that modifies "year"

(E) year, which thus cost the nation $50 billion in lost medical expenses and - which modifies year

whats an OA?

Migraine, the most debilitating common form of headache, afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year, and they cost the nation $50 billion in medical expenses and lost work time.

(A) year, and they --who days?people?
cost the nation $50 billion in medical expenses and lost

(B) year and thus -- can clearly see that people who lose the workdays ---cost the nation $50 billion in medical expenses and lost

(C) year, so as to cost --awkward sentence construction---the nation $50 billion in medical expenses and lost

(D) year that --what? year?---costs the nation $50 billion in lost medical expenses and

(E) year, which thus cost --even worse than C---the nation $50 billion in lost medical expenses and

B seems to be the answer

My stupidity [D] was clearly out-of-line!

OA is [spoiler][/spoiler]

Thanks for your response.

First of all 2/3 split of cost/costs..which one is correct?
Which leads us to the question:
What causes the loss? The Migraine or the Americans or the workdays?
I think that "thus" is fundamental--it would be incorrect to say that migraine cause these problems directly; "thus" means something akin to "in this way," so we have a kind of explanation of how migraine causes this problem.
So.B seems correct..but HOLD ON!Should'nt it then be COSTS???
Hmm..SO now from the costs/cost pt iof view correct ans should be D??

Help!

Migraine (,the most debilitating common form of headache, ) afflicts perhaps 18 million Americans, who( collectively lose 64 million workdays a year, and they cost the nation $50 billion in medical expenses and lost work time).

It is clear who starts a subordinate clause modifying Americans affected by migraine, removing the extra's:

Migraine afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year, and they cost the nation $50 billion in medical expenses and lost work time.

So it is clear two things are told in subordinate clause vis lose 64 millions workdays a year and cost the nation $50b in medical expenses and lost work time

These two should be expressed in parallel structures.

(A) year, and they cost the nation $50 billion in medical expenses and lost
they has not antecedents, only subject is who
(B) year and thus cost the nation $50 billion in medical expenses and lost

(C) year, so as to cost the nation $50 billion in medical expenses and lost
so as to starts another clause and distorts the meaning.
(D) year that costs the nation $50 billion in lost medical expenses and
again that has a bad referrent only singular referrent are Migraine and year none of them suitable here.

(E) year, which thus cost the nation $50 billion in lost medical expenses and
which modifies year which is wrong

B is the answer but I still have doubt


Migraine, the most debilitating common form of headache, afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year and thus cost the nation $50 billion in medical expenses and lost work time.


who collectively lose 64 million workdays a year and thus cost the nation $50 billion in medical expenses and lost work time

What is the subject for these two cost and lost?

akhpad wrote:B is the answer but I still have doubt


Migraine, the most debilitating common form of headache, afflicts perhaps 18 million Americans, who collectively lose 64 million workdays a year and thus cost the nation $50 billion in medical expenses and lost work time.


who collectively lose 64 million workdays a year and thus cost the nation $50 billion in medical expenses and lost work time

What is the subject for these two cost and lost?

I think subject is 18 million Americans...........

lunarpower wrote:i received a PM.

what is the source of this problem?
all of the choices, including the "correct" answer, contain errors.

Hi Ron,

This is official problem

Graduate Management Admission Test® (GMAT®)
Disclosed Edition
Test Code 48