GMAT Sentence Correction (SC) | Re: A recent United States Census Bureau report shows that there

The correct answer is B. First consider a simple example to understand why the parallelism is properly maintained inB:

I have three times as many pens asyou have (pens) .

The blue-highlighted and the pink-highlighted parts are correctly compared.

Now take option E:

there are (more than) three times as many householdswhere the children and grandchildren are living in their grandparents’ home asthere are (households) where
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