This is a gmatprep question :- http://postimg.org/image/iggwv05pd/
Responding to the public’s fascination with-and sometimes
undue alarm over-possible threats from asteroids, a scale
developed by astronomers rates the likelihood that a particular
asteroid or comet may collide with Earth.
A. a scale developed by astronomers rates the likelihood
that a particular asteroid or comet may
B. a scale that astronomers have developed rates how
likely it is for a particular asteroid or comet to
C. astronomers have developed a scale to rate how likely
a particular asteroid or comet will be to
D. astronomers have developed a scale for rating the
likelihood that a particular asteroid or comet will
E. astronomers have developed a scale that rates the
likelihood of a particular asteroid or comet that may.
OA : D
I could not figure out a way to pick between C and D . Went with C eventually.
The reason I picked C , was "astronomers have developed scale TO rate" is better than "astronomers have developed X FOR ratING" ... Can any of the instructors please explain why is C incorrect ? Although I did find "to rate how likely" in option C , awkward .
The reason I eliminated E was - redundancy (likelihood and may ) . Also , "likelihood of X that may" in E sounds incorrect. Could you please explain this usage , if it is incorrect ?
Thanks,
Jyothi