on Just Publishing Advice:

Embedded questions are easy to use when you want to add more variety to your writing.

We use them to change a direct question into a statement form. Indirect questions, which are also called polite questions, are one form of embedded questions.

But you can use other forms to convert a question into a statement or change the register in your writing.

Using variations is a great way to enhance dialogue in fiction writing. You can also use it effectively in article writing. It’s a great way to engage your readers.