The spleen not only destroys and removes old red blood cells, but it also removes debris from the bloodstream, protects lymphocytes, and acts as a resivoir for blood!
A ductless vascular gland that destroys old red blood cells, removes debris from the bloodstream, acts as a reservoir of blood, and produces lymphocytes. white pulp: The part of the spleen where lymphocytes are maintained in a similar way as in lymph nodes.
a, because exercise doesn't just aid the prevention of certain diseases, it helps prevent many diseases. i would've chosen d if it wasn't so specific but a is the correct answer.
