Choose the demonstrative pronoun is the following sentence: "This invitation fell out of her backpack."

her
of
backpack
this

Neither of the two pronouns in this sentence is used as a demonstrative pronoun.

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THIS: Demonstrative pronouns are those that point out an intended referent. Most popular are this, that, these, and those.

The demonstrative pronoun in the sentence "This invitation fell out of her backpack" is "this."

To identify the demonstrative pronoun in a sentence, you need to look for words that point out or indicate specific nouns. Demonstrative pronouns include words like "this," "that," "these," and "those."

In this sentence, "this" is used to indicate the specific invitation that fell out of her backpack. It is pointing to and referring to a particular object, which is the invitation.