Answer:
You need to approve all the changes then stop the recording of the changes.
Step-by-step explanation:
When you activate the feature to track the changes done in a document, your word-processing program ads all kinds of markings to your text to indicate what as added, what was removed and such.
These marks are not only ugly to see for a reader but also complicate a lot the reading.
Besides, if you erased a few bad words, you don't want them to be visible when your teacher or your boss reads the final text.
Accepting all the changes will make the text look the way you wanted, without all the previous attempts to get the text right.