KyleWiddison wrote:
gmatter0913 wrote:
IMO B.
'directed' and 'studied' are parallel.
What is the answer?
The OA is C. Choice B is tempting because it's essentially grammatically correct with directed/studied are parallel with a modifying phrase sandwiched in between (you could argue pronoun ambiguity but the GMAT accepts ambiguity in many cases). You have to decide between B & C on the basis of meaning. Let's look at the structures of both options:
Option BDoctors hope stem cells can be
directed for transplant, using them (transplants?) to test drugs/chemicals,
and
studied to gain insight
[This option seems to suggest that the transplantable organs will be used to test drugs/chemicals. Why would transplantable organs be used for testing instead of for transplants? This meaning is questionable.]
Option CDoctors hope stem cells can be
directed for transplant,
used to test drugs/chemicals,
and
studied to gain insight
[This option states three reasons why doctors want to use the stem cells: transplants, testing, and study. This meaning is very straightforward.]
Option B is eliminated for questionable/illogical meaning. Option C wins.
KW
Hello Kyle,
C is the answer to this one...
My query is on the usage of them in other options and what "them" refers to...In my opinion...them can refer tissues,organs or cells as well..The sentence will make sense if replace them with any of the options
Eg...
master cells can be directed to grow in organs or tissues, using tissues/organs to test drugs and potentially chemicals,and may study tissues/organs to gain insight...(Use of master cells will not work here)
In your explanation above, them seems to be refer to transplant (singular,I think...but them is plural)...please confirm what them refers to then...
In option C however,
master cells can be
directed to grow in Organs or Tissues,
Masters cells can be
used to test drugs
and Master cells can be studied..
Clearly it is the master cells which can be used for the purposes...
In option D and E can we say that a transplant ---- a particular type of transplant is being talked about and not transplant in general..can we rule these option on these basis as well...(i know parallelism is best here but looking at what other ways can the answer choice be rejected)