When you lift a book from your desk you are using your arms as a?

answer; i believe that the correct answer is (light);

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.

a = executive branch; b = judicial branch