Quote:
Maine will face a serious shortage of timber by the year 2000, the result of a major infestation of spruce budworm, that much of Maine's spruce and fir forests are coming to maturity, and a rapid expansion of the paper business.
(A) that much of Maine's spruce and fir forests are coming to maturity
(B) that coming to maturity of much of Maine's spruce and fir forests
(C) much of Maine's spruce and fir forests are coming to maturity
(D) Maine's spruce and fir forests, much of which is coming to maturity
(E) that maturity is coming to much of Maine's spruce and fir forests
It's fairly straightforward when you correctly predict the structure of the final sentence.
Eg. I may have a bad headache tomorrow, the result of heavy drinking, late night partying and waking up early.
The awkward "that much of Maine's spruce and fir forests are coming to maturity" clause throws you off this trail.
A, B and E are out since "that" breaks flow and parallelism. D is out because it uses the singular "is" to describe "forests". C doesn't sound ideal but is an easy choice because others have very obvious mistakes.