Observe the diagram and answer the following question.

Which among the following cell produce the molecule shown in figure?

B-lymphocytes

The correct answer is Option (3) –B-lymphocytes

B-cells, also known as B lymphocytes, play a crucial role in the immune response by producing antibodies. When an antigen (foreign substance) enters the body, B-cells recognize it and undergo activation. Upon activation, B-cells differentiate into plasma cells, which are specialized cells that produce and secrete antibodies. These antibodies bind to the antigens, marking them for destruction by other immune cells or neutralizing their effects. This process is known as antibody-mediated immune response, and it is a key defense mechanism against pathogens and foreign invaders.