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According to public health officials, in 1998 Massachusetts became the first state in which more babies were born to women over the age of thirty than under it.
than they were
than there had been
than had been born
Option A is the correct answer.
Concept tested: Comparisons, Tenses, Pronouns.
A) Correct Answer
B) The word “born” in the option seems to refer to babies. We should be comparing women.
C) Inappropriate usage of the word “they” as it has no clear antecedent.
D) Inappropriate usage of the past perfect tense; “had been”
E) Same as D.