"D"....so...that puts an emphasis on the speed of decrease...such that doesn't create that effect.
I agree. (D) should be it.
Why "was halved" is incorrect?
What do you guys think on the tense of this Sentence. Is it OK? IMO it is slightly ambiguous?
such .... that is incorrect and was halved is correct.
Sorry for the delay.
Such...that is correct idiomatic usage from one of the notes I have - but, I cannot say this with 100% certainity as it is an idiom in the first place
IMO "was halved" is a passive construction, but other than that, don't you think "halved" alone would convey the correct meaning?