Question

when the antigens on the surface of red blood cells react with antibodies in the serum, the cells clump together. this process is called

clotting

agglutination

hemorrhage

anemia

Explanation:

Agglutination is the process where antigens on red - blood cells react with antibodies in serum causing the cells to clump together. Clotting involves the formation of a fibrin - based clot in blood vessels. Hemorrhage is blood loss from the circulatory system. Anemia is a condition related to low red - blood cell count or low hemoglobin levels.

Answer:

B. Agglutination