Answer:
After the invention of the cotton gin in 1793, the economies of the Upcountry and the Low country of the state became fairly equal in wealth. The expansion of cotton cultivation upstate led to a marked increase in the labor demand, with a concomitant rise in the slave trade.
<span>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)
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The second one would be correct. The name(s) precede the page number.
The sentence showing correct punctuation is Sentence 3. Since "girl" is a singular noun, the possessive form should be "girl's".
Sentences 1, 2 and 3 show incorrect representation of a singular possessive noun. The appropriate to use on these sentence is "girl's".