Answer: E) Ours.
Explanation: The possessive case is a structure usually used to show possession in a sentence. It applies to nouns, adjectives and pronouns. The possessive case of nouns is form by adding " 's" to the end of the noun, for example: my sister's book. The possessive adjectives are my, your, his, her, its, our, and their. And the possessive pronouns are mine, yours, his, hers, its, ours, and theirs, so the pronoun in the given sentence that is in the possessive case is "ours."
