The computer company registered a $16 million net loss for the year, largely because it was profitable only overseas, where much of their profits were used for paying higher taxes, while continuing to lose money in North America.
a) where much of their profits were used for paying higher taxes, while continuing
b) where much of their profit went to pay higher taxes, as they continued
c) where much of its profit went to pay higher taxes, while it continued
d) with much of their profits going to pay higher taxes, while continuing
e) with much of the profit used for paying higher taxes, as it continued
I read some pages in grammar books to explain "where-clause" in choice C.
where-clause can work as a noun/subject.
where you live is a point
works as adjective/attributive
the place where you live is nice
works as adverb, modifying a verb/process.
I eat where you eat
work as adverb modifying another adverb.
I live there, where you study. this case is our choice C.
just remember, dependent clause such as where-clause, can be any function above.
I will meet you tomorow, when my parent are absent
it was profitable overseas where much of the profit went to pay higher tax
in the first, when-clause modifies adverbial "tomorow". similarly, in the second "where- clause" modifies adverb "overseas.
if I find something more interesting, I will come back here to edit this posting.