SC - For or Since to show cause effect

[gs.abhinav]

Source: none, made up to represent an official question.

As the health insurance affordability gap widens, lower-income groups are especially hard-hit, and these groups can no longer qualify to buy insurance, and rising private insurance rates force them to use far more than the standard 20 percent of their incomes for government health services, leaving them with no subsidies or tax write-offs to offset the expenditures.

(A) and these groups can no longer qualify to buy insurance, and
(B) since these groups can no longer afford to buy insurance, furthermore
(C) for these groups can no longer afford to buy insurance, yet
(D) and these groups can no longer afford to buy insurance; however,
(E) and these groups can no longer afford to buy insurance, for



Confused between B and C. Is 'for' acceptable to show a cause-effect relation? Please explain your answers.

Thanks

[george.kourdin]

i dont know how useful it is to make up questions to demonstrate a point because its possible that the made-up question is flawed from the get-go and no answers really work

anyways the second part of the sentence does not contradict the 1st, it further emphasizes the point that these people are screwed so i think that all connectors except for furthermore go out the window

[messi10]

Hi Abhinav,

What is the correct answer for this question?

In option B, is it definitely a comma after insurance or should there be a semicolon?

Thanks

Sunil

[gs.abhinav]

Hey Sunil, correct answer is C. And no there is no semicolon in B before 'furthermore'. That's incorrect because its a conjunction right? But I didn't like B because of the 'for'.

This question popped up in one of the online tests I was taking so I did a little more search today and found stacey's explanation to this one -

http://www.beatthegmat.com/q-140-1000-sc-t17584.html

but its a bad question overall according to her and I felt so too.

[messi10]

Thanks dude

[tim]

You are probably best to restrict your study to actual SC examples rather than made up ones, as the sentences you make up may not be sufficiently representative of actual GMAT problems to be worth your time..