Some things that are going through my mind if I let it wander is food. I am also think about the homework that I need to do. I am also thinking about what I am going to do on the weekend. I am also thinking about how I am tired and that I want to go to bed.
It is an extended metaphor because it is continued throughout the entire paragraph. So the answer is D.
I hope this helped! :)
I believe it is A, because D is just describing incompleteness and regret, not actually *out there* with figurative language.