At least 8 glasses/cups of water
If she has a friend available, I would recommend the friend finding the end of her finger and preserving it and taking it to the hospital with her just in case it can be reattached. Also, elevating the extremity above the level of the heart can help with blood loss. If the bleeding is so extreme that pressure and elevation are not helping, a tourniquet may be a necessary step. Of course, call EMS for additional help.
The top layer of the skin also known as the dermis
Answer would be A. Signaling rules