Blood typing is based on ______ on the surface of the red blood cells.

A. antigens
B. protein
C. antibodies
D. a Rubella titer

i am thinking B again im not 100% just wanted to see if i was correct. please help

It's the antigens = A.

Sra

Blood typing is indeed based on antigens on the surface of red blood cells. These antigens are specific molecules that are present on the cell membranes and determine the blood group of an individual. Therefore, the correct answer is A. antigens.

To arrive at this answer during an exam or test, it is helpful to have some basic knowledge about blood typing. Antigens are substances that can trigger an immune response in the body, and they play a crucial role in determining an individual's blood type. There are different blood groups, the most well-known being the ABO blood group system, where the antigens present on red blood cells can be classified as A, B, or neither (O).

To find the correct answer, think about the main factor used to determine blood type: the presence or absence of specific antigens on the surface of red blood cells.