Final answer:
Applying direct pressure to the bleeding site is the most appropriate course of action when the end of the umbilical cord attached to the baby is bleeding after clamping and cutting.
Step-by-step explanation:
The MOST APPROPRIATE course of action when the end of the umbilical cord attached to the baby is bleeding after clamping and cutting is to apply direct pressure to the bleeding site. This will help to stop the bleeding by promoting clotting. It is important to monitor the baby closely for any further bleeding or complications.