Which sentence uses a possessive pronoun correctly without an apostrophe?

Which sentence uses a possessive pronoun correctly without an apostrophe?

• A. That is Her's book.
• B. That is His book.
• C. That is Theirs book.
• D. That is Your's book.

Answer: (D)

The key idea is how possessive forms work without apostrophes. Possessive pronouns (mine, yours, his, hers, ours, theirs) don’t take apostrophes. When a noun follows, you usually use the possessive adjective form (my book, your book, his book, her book, our book, their book). When the pronoun stands alone, you use the standalone form (that book is hers; that book is theirs; that book is yours). In the given sentences, the correct construction without an apostrophe is the one that uses his before the noun: that is his book. Here, his is a possessive determiner modifying the noun book, and no apostrophe is needed or used. The other options fail for these reasons: Her's is not a valid form—the correct possessive for she is hers, or you could say her book if you’re modifying a noun. Theirs book is incorrect because a possessive pronoun should stand alone as theirs, or you would use their book with the noun. Your's is incorrect because the proper form is yours; to include a noun you would say your book.

The key idea is how possessive forms work without apostrophes. Possessive pronouns (mine, yours, his, hers, ours, theirs) don’t take apostrophes. When a noun follows, you usually use the possessive adjective form (my book, your book, his book, her book, our book, their book). When the pronoun stands alone, you use the standalone form (that book is hers; that book is theirs; that book is yours).

In the given sentences, the correct construction without an apostrophe is the one that uses his before the noun: that is his book. Here, his is a possessive determiner modifying the noun book, and no apostrophe is needed or used.

The other options fail for these reasons: Her's is not a valid form—the correct possessive for she is hers, or you could say her book if you’re modifying a noun. Theirs book is incorrect because a possessive pronoun should stand alone as theirs, or you would use their book with the noun. Your's is incorrect because the proper form is yours; to include a noun you would say your book.