The pronoun the writer used to show possession is mine.
The correct option is D.
The pronoun that shows ownership or possession is called the possessive pronoun.
A possessive pronoun shows whom you are talking bout and its object.
Examples: This pen is mine.
This dog is hers.
Thus, in this case, the writer used the word mine, which is a possessive pronoun.
Learn more about possessive pronouns, here:
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