D is, i guess, wrong because it uses 'to run' along with 'as for'.
i mean take B, "cost of running nuclear plants is about the same as for" is the correct usage.
I'm happy to respond.
has multiple problems. Here it is: (D) It costs about the same to run nuclear plants as for other types of power plants, whereas the electricity they generate is more expensive, stemming from the fixed costs of building nuclear plants.
I would say the first part, before the first comma, is more-or-less correct. It may be a little awkward, but there is nothing unambiguously incorrect about that first part.
One problem is ambiguous pronoun "they
" --- to whom does this refer? The "nuclear plants
" or the "other types of power plants
"? That is a major logical flaw.
The whole arrangement of the second half of the sentence has a choppy awkward feel to it. Among other things, the putative cause of the increased expense, the building costs, is illogically relegated to a parenthetical structure, and is not part of a direct & powerful statement of cause & effect.
Overall, choice (D)
is just a poor way to phrase the information, and (B)
is much more powerful & clear & direct.
Does all this make sense?
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