Throughout the story the narrator uses the words “creep” and “creeping” to describe the wallpaper figure’s movements. what does this word choice suggest about the narrator?

The word choice suggests that the narrator sensed a disturbing feeling from the wallpaper figure’s movements. The narrator has distinguished the pattern to be that of a woman wanting to be free. She related herself with this woman and believed that she is also trapped.

The thing which the word choice suggests about the narrator is:

According to the given question, we are asked to state the thing which the word choice suggests about the narrator and how  it affects the development of the story.

As a result of this, we can see that the word choice of using "creep" and "creeping" to make a visual description of the wallpaper was meant to suggest that the narrator was in fact aware of the distress which the wallpaper was facing.

Read more about word choice here:

link

be more specific with your question.

it is believed to be alfred, lord himself