Final answer:
The white pulp of the spleen, B) White, is primarily concerned with immune functions by supporting adaptive immune responses involving lymphocytes such as T and B cells.
Step-by-step explanation:
The correct answer to the student's question 'Splenic ________ pulp is primarily concerned with immune functions of the spleen' is B) White. The white pulp of the spleen is comparable to lymphoid follicles found in lymph nodes and is rich in lymphocytes. It is organized around central arterioles and includes germinal centers with B cells, surrounded by T cells, and other accessory cells such as macrophages and dendritic cells. The main function of the white pulp is to mount adaptive immune responses involving T and B cells.
Red pulp, on the other hand, is responsible for filtering the blood and removing damaged or aging red blood cells. It consists of reticular fibers, macrophages, and other typical blood cells. Thus, the splenic red pulp works with the more nonspecific immune response, while the white pulp is where specific adaptive immune responses occur.