Answer:
C. Thrombocytes
Step-by-step explanation:
Thrombocytes are also known as platelets. When you get a cut and a blood vessel gets injured, the thrombocytes are triggered by the bleeding. So what they do is that they clump up together forming some sort of a plug on the damaged area to stop the bleeding. The name thrombocytes actually came from a Greek word which literally means "clot".