Question

Most common blood group in India and World is

Answer 1

ABO blood grouping

$\text{ABO}$ blood grouping is based on the presence or absence of two antigens: $A$ and $B,$ on the surface of $\text{RBCs.}$

There are four types of blood groups in $\text{ABO}$ blood grouping system:

$\bullet$ Type $A$

$\bullet$ Type $B$

$\bullet$ Type $AB$

$\bullet$ Type $O$

Among these four, type $O$ is the most common blood group.

Final answer

$\left(D\right)O$