7.

The blood component responsible for clothing is

(a) Lymphocyte (b) Erythrocyte (c) Thrombocytes (d) Leucocytes

C. Thrombocytes

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".