The best conclusion that can be drawn about Margaret’s wound, given the information provided, is:
The abrasion is only a wound to the capillaries and will seep blood for a while but then heal on its own.
This conclusion is most supported because the scenario describes a steady flow of blood that eventually subsided after appropriate first aid measures (pressure and elevation), which typically indicates a minor wound involving capillaries rather than a more severe injury involving arteries or veins. The fact that Juan was able to manage the bleeding with standard first aid also suggests that the wound is not life-threatening. The other options imply more severe issues that are not substantiated by the details provided.