Directions: Fill the blank space with the correct pronoun from the given options. That picture surely isn't _________ is it?

This construction uses a possessive pronoun at the end of a sentence following 'isn't'. The correct form is the possessive pronoun 'mine' (absolute possessive), which functions as a pronoun itself rather than modifying a noun. The phrase 'isn't mine' expresses non-ownership correctly, whereas 'me' would be grammatically incorrect in this context.