Answer:
d. Soluble fibrinogen to fibrous fibrin
Explanation:
Thrombin is an enzyme (serine protease) that is activated from prothrombin in a cascade of reactions. It converts fibrinogen to fibrin.
Fibrinogen is a soluble glycoprotein produced from the liver and plays a critical role in clotting of blood, as a precursor for the formation of fibrin and also involved in platelet aggregation
Fibrin is a fibrous and tough non- globular protein that is involved in blood clotting. In blood clotting, fibrin and platelet combine to for a clot on a wound.
