A malignant tumor is more dangerous than a benign tumor because ___________.
(a) its cells are proliferating faster.
(b) it causes neighboring cells to mutate.
(c) its cells attack and phagocytose neighboring normal tissue cells.
(d) its cells invade other tissues.
Answer:

If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.