After the summer, no one was ready to go back to is no one used in this sentence?
1. interrogative
2. indefinite
3. demonstrative
4. none of the above

2. indefinite

Explanation:

An interrogative pronoun is a word that is used when we ask a question (what, when, where, who, which, whom, whose, why, how). Indefinite pronouns are those that refer to non-specific beings, objects or places (everyone, something, nobody, etc.). Demonstrative pronouns are those that are used to point to something within a sentence (this, these, that, those). In this example, "no one" is being used as an indefinite pronoun.