Final answer:
Tranexamic acid is the correct drug to apply topically to stop bleeding, working by stabilizing blood clots rather than preventing them like other anti-coagulants.
Step-by-step explanation:
The drug that you can apply topically to stop bleeding is c) Tranexamic acid. Tranexamic acid works by inhibiting the enzymes that dissolve blood clots, thus helping to stop the bleeding. Unlike the anti-coagulants listed in the other options such as Warfarin (Coumadin), Heparin, Enoxaparin, Rivaroxaban (Xarelto), Dabigatran (Pradaxa), or Apixaban (Eliquis), which prevent or treat blood clots by reducing the body's ability to clot blood, tranexamic acid helps to stabilize clots and is useful in situations where bleeding needs to be controlled.