Which option shows articles and modifiers being used correctly? A. She lives on an twentieth floor of the old apartment building somewhere in Manhattan. B. She lives on the twentieth floor of a old apartment building somewhere in Manhattan. C. She lives on the twentieth floor of an old apartment building somewhere in Manhattan. D. She lives on a twentieth floor of the old apartment building somewhere in Manhattan.
C. She lives on the twentieth floor of an old apartment building somewhere in Manhattan.
This option is accurate since it contains articles and modifiers that are grammatically correct: i) "the" is used before the word "twentieth" (a noun modified by ordering- i.e. first, second, third, and so on...) ii) "an" is used before the word "old" (which begins with a vowel)
