B lymphocytes or B-cells are responsible for producing antibodies when antigens enter the body.
An antibody may be defined as a protein produced by plasma cells in response to a specific antigen.
The major function of an antibody is to eliminate disease-causing organisms which are known as pathogens and barricade them from contaminating human cells.
Plasma cells of the body produce B cells and memory. B cells play an essential role in producing antibodies while memory cells initiate the process of secondary infection.
The complete question is as follows:
Therefore, B lymphocytes or B-cells are responsible for producing antibodies when antigens enter the body. Hence, the correct option is A.
To learn more about Antibodies, refer to the link:
https://brainly.com/question/15382995
#SPJ1
