I have seen Ron's video explaining this question on Gmatprep
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.
A. than
B. than born
C. than they were
D. than there had been
E. than had been born
Ron explains that In construction (more/less than ... / as...as.. etc) the comparison should not be complete elements and independent sentence.
So Choice C is not parallel here
If the sentence is
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 they were born to women under 30.
will it be correct?
However, in another example
The air quality of LA was higher in 2010 than it was in 1995
Why ,in the same construction, can we use independent sentence follow "than" here?
Moreover, I found another Gmatprep question
To meet the rapidly rising market demand for fish and seafood, suppliers are growing fish twice as fast as their natural growth rate, cutting their feed allotment by nearly half and raising them on special diets
A) their natural growth rate, cutting their feed allotment
B) their natural growth rate, their feed allotment cut
C) growing them naturally, cutting their feed allotment
D) they grow naturally, cutting their feed allotment
E) they grow naturally, with their feed allotment cut
OA is D -> also the independent sentence follow construction "as fast as"
Could anyone please clarify my doubt here?
