889. Unlike a hurricane, which can be observed from within, a tornado is so small that such a study has not been practical.

(A) that such a study has not been practical
This is the correct answer
(B) that studying it that way has not been impractical
Pronoun(it) reference error and why "has not been Impractical"(meaning)
(C) for such studies as this to have been impractical
Why use "such" again, meaning error
(D) as to not make such a study practical
meaning again
(E) as to be impractical of study
"Impractical of"

Unlike a hurricane, which can be observed from within, a tornado is so small that such a study has not been practical.

(A) that such a study has not been practical
(B) that studying it that way has not been impractical ---> that refers to what
(C) for such studies as this to have been impractical ----> this refers to what ???
(D) as to not make such a study practical
(E) as to be impractical of study --> meaning....


between A and D....hmmm..The tense in D is wrong..comparing to "can be observed "not make" is different tense.....

i will pick A..

Whats the OA ?

Sorry, just saw the answer...

nice problem for the bag