1. **State the problem:** Identify the forces acting on your hand and their directions based on the given options. 2. **Forces acting on the hand:** According to the selections, the forces acting on the hand are: - Book on hand - Hand on book - Floor on hand 3. **Forces not acting on the hand:** Earth on hand is not selected, so it is not considered a force acting on the hand. 4. **Directions of forces:** The direction given for "book on hand" is down. 5. **Summary:** The forces acting on the hand are: - Book on hand (down) - Hand on book (direction not specified in the prompt) - Floor on hand (direction not specified in the prompt) Since only "book on hand" direction is specified as down, the others remain unspecified based on the given information.