PLEASE ANSWER FAST Colin is helping the librarian return books to the shelves where they belong. He picks up books from the librarian’s desk, as shown in Figure A. He then carries them to the shelves, as shown in Figure B.

Two illustrations with the left one showing a boy lifting books up that have been sitting on a desk, and the second one showing a boy carrying books toward a bookcase on the right.

Explain why Figures A and B do or do not show work being done. Then, provide two examples (not including lifting or carrying) of how work could be done on the books.