Answer:
A. The baby's bottle was empty.
Explanation:
Possessive nouns are nouns used to show ownership, i.e. that something owns something else. In most cases, a possessive noun is formed by adding an apostrophe and <em>s </em>to the noun. If the noun is plural and already ends in <em>s</em>, only an apostrophe is added.
The sentence that contains a properly written possessive noun is sentence A. The bottle is owned by the baby. An apostrophe and<em> s</em> are properly added to this noun.
In sentence B, the apostrophe should be placed before <em>s</em> in <em>girls'. </em>If the noun was plural, it would've been correct, but it is singular.
In sentence C, there is no possessive noun.
In sentence D, the apostrophe should be placed before<em> s</em> in <em>mens'. Men </em>is the plural form of <em>man</em>, and the possessive form is <em>men's. </em>
