Which one of the following statements best describes the role of B cells and T cells in the human body?
Correct Answer D. They protect the body from the diseases caused by pathogens.
Explanation
Correct answer: (d) They protect the body from the diseases caused by pathogens
B cells produce antibodies that neutralise pathogens, while T cells directly destroy infected or cancerous cells and help coordinate the wider immune response — together defending the body against disease-causing organisms.