​During blood clot formation, the soluble plasma protein ____ is converted to insoluble threads of ____.

A) ​fibrinogen; fibrin
B) ​fibrin; fibrinogen
C) ​fibrinogen; thrombin
D) ​albumin; fibrin
E) ​fibrin; albumin

Fibrinogen

A blood plasma protein that's converted into fibrin by thrombin in the blood clotting process, essential for wound healing.

Fibrin

A protein that plays a crucial role in blood clotting, forming a fibrous mesh that impedes the flow of blood.