Anna hides a note in her desk. Her brother sees her, and moves it to the shelf — but Anna watches him through the window, and he doesn't know she saw. Where does he think she'll look?

He thinks she will look in her **desk**.

Since he doesn't know she saw him move it, he assumes she still believes the note is where she originally hid it.

He thinks she will look in the **desk**.

Since he doesn't know she saw him move it, he assumes she still believes the note is where she originally left it.

He thinks she will look in her **desk**.

Because he doesn't know she saw him move it, he assumes she still believes it is where she originally hid it.

He thinks Anna will look in her desk.

The brother thinks Anna will look in the **desk**.

Here's the reasoning: The brother knows Anna originally hid the note in the desk. He moved it to the shelf, but critically, *he doesn't know that Anna saw him* move it. So from his perspective, Anna still believes the note is where she left it—in the desk.

He has no reason to think Anna's belief has changed, so he expects her to look in the desk.

(The twist is that Anna actually *did* see him, so she'll really look on the shelf—but the question asks what the *brother thinks*, and he's operating on incomplete information.)

The desk.

He thinks she will look in her **desk**.

Since he doesn't know she was watching him, he believes she still thinks the note is where she originally hid it.

The desk.