What is calcium-rich tissue containing osteocytes and collagen?

i think the answer is b.

not sure if this is what you'r looking for nnew= nold

that is wrong, its not thymus.

sorry to break it to ya but no one can answer your question it's just

jk but i am serious about the part that most people cant answer it beacuse you did not mention the section you are talking about. but it would if you added some detail and were a bit more specific.