Clotting of blood involves which one among the following clotting proteins?

Clotting of blood involves the protein Fibrinogen, which is converted into fibrin during the clotting process. Fibrinogen is a soluble plasma glycoprotein produced by the liver. During blood clotting, the enzyme thrombin converts fibrinogen into insoluble fibrin strands that form a mesh-like network. This mesh traps platelets and blood cells to form a stable clot, sealing the wound and preventing further blood loss. Pathogens are disease-causing agents, while macrophages and phagocytes are immune cells involved in engulfing foreign particles, not directly in blood clotting. Hence, fibrinogen is the correct clotting protein.