Houston comprises a square mileage
about four times as large as New York City but only two million in population, where many are suburban residents living well outside the area generally considered the city center.
A. about four times as large as New York City but only two million in population, where many --- 1.where denote population --- wrong. 2. Compares an area with a city --- wrong
B. of about four times the large size of New York City is, but in Houston, there is a population of only two million, and many --- the large size of NY city is--- a dummy filler choice with nothing worthwhile to espouse
C. that is about four times the large size as New York City's square mileage, but in Houston with a population of only two million people, many of them --- the large as is unidiomatic. Four times the size of the proper idiom.
D. quadruple to the size of New York City, but only two million in population, and many--- quadruple to the size is unidiomatic.
E. quadruple that of New York City but a population of only two million, many of whom ---
The correct choice using the proper idiom ‘quadruple that of’