In the following paragraph, the fourth sentence contains yesterday, bill stopped at the library to pick up some books for his father. when he got to the library, the librarian could not find the books. she looked for them for half an hour. (4) she was embarrassed when she found that they had been put back on the shelves. two possesive singular pronouns and one personal plural pronoun a personal pronoun and two possessive pronouns two personal pronouns and one possessive pronoun three personal subject pronouns

D). Three personal subject pronouns

Explanation:

The given paragraph carries four distinct sentences with different pronouns. As far as the fourth option is concerned, it employs three personal subject pronouns 'she', 'she', and 'they'. A subjective personal pronoun is referred to as the personal pronouns that are functioning as the subject of the sentence and in the fourth sentence, three clauses are joined together and each carries it's a subjective personal pronoun. Thus, the option that clearly describes the fourth sentence is the last option that states that it contains 'three personal subject pronouns'. The other options assert a wrong claim as the sentence does not carry a possessive pronoun.

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