According to the National Science Foundation, in 2003 there were 198,113 female science and engineering graduate students, almost 42% of the graduate students in those fields, twice as much as 1981.
A. twice as much as 1981
B. twice as many as 1981
C. double the figure for 1981
D. double what it was in 1981
D. a number double that of 1981’s
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I understand why A,B and D are wrong. But I want to make sure I understand other choices properly.The answer explanation for E says:
"Double that of 1981’s" is wordy, awkward, and unclear. Is this because the sentence would mean something like "Double the number of 1981’s number"? This will definitely be redundant.
The singular pronoun "that" has no clear antecedent. Demonstrative pronouns should typically be as close to their previous copy as possible.
The possessive "1981's" is not followed by a noun to possess.. I don't understand this one. In SC 4th edition strategy guide "comparison" chapter, the book clearly mentions that possessing nouns allows to omit units, verbs or clauses. So "1981's" could mean 1981's number of students.