Why might this flashback or memory be important? This is the anchor question for which fiction signpost?

How might this sudden realization or discovery change things? This is the anchor question for which fiction signpost?

This signpost is when an older characters gives advice to the main character that helps them on their journey or helps them solve a problem.

This signpost is when the author leaves the current action of the story to tell you something from their past or another character's past.

Which signpost do you notice in the story? 

Which signpost do you notice in the story? 

Which signpost do you notice in the story?