Ace the TSA CBT Exam 2026 – Get Ready to Fly Through with Confidence!

The correct answer is "who" because it is not a demonstrative pronoun. Instead, "who" is an interrogative pronoun used to ask questions about people or to introduce relative clauses. Demonstrative pronouns, such as "this," "those," and "that," are used to point to specific things or people, indicating their proximity or number. For instance, "this" refers to a singular object that is near, while "those" refers to plural objects that are farther away. Thus, "who" stands out as the only option that does not function in the same way as the other choices.