You can use the drag and drop into text when you have a piece of text and you want to do a fill in the blank type of activity but with pre-chosen words or phrases.

Check out the example for how to write these questions:

The syntax is two opening square brackets followed by a number (which is the choice number) and then two closing square brackets. (Unfortunately Notion doesn't allow us to write this without triggering its own command things so we tried to explain better in the screenshot).

Here's what it looks like for the player: