The author hooks the reader by asking a questions that?

Interesting. Questions that hook the reader in a text is called a rhetorical question. The questions needs to make the reader feel as if he/she is in what you're describing.

Simply make the reader intrigued in reading it.

For example, you can use a title of an essay as a hook.

Some writers may make their titles "Consider this" or "On that" and the reader is automatically interested and wondering what they should be considering or reading about.