Which of the following is a protein that forms during the final stages of the clotting process?

Platelet

Erythrocyte

Fibrin

Coagulin

Answer: Fibrin.

Explanation:

Blood clotting refers to a process where clump of blood transform from liquid to gel like, thereby forming clot. These occur when there is cessation of blood loss due to damaged vessels.

When a blood vessel is damaged, it is exposed to some factors which lead to platelet plug formation. The platelet seal together to form a cover on the damaged vessels.

Coagulation occurs where fibrin form a mesh that collect the platelet, blood cells and plasma. The fibrin mesh contract and drain out the fluid content.