Answer:
(B) Red pulp, found in the spleen, contains macrophages that destroy old erythrocytes.
Step-by-step explanation:
Lymphoid organs limit the spread of disease by filtering and trapping microscopic pathogens, preventing them from traveling elsewhere in the body. Red pulp, found in the spleen, contains macrophages that destroy old erythrocytes correctly links a functional or structural feature with the appropriate lymphoid organ.