NK cells-natural killers-belong to: a. basophils b. eosinophils c. lymphocytes d. neutrophils

The correct answer is c. lymphocytes.<br /><br />NK cells, or natural killer cells, are a type of lymphocyte that play a crucial role in the innate immune system. They are responsible for recognizing and destroying infected or cancerous cells. NK cells are distinct from other types of lymphocytes, such as T cells and B cells, which are part of the adaptive immune system.