Angiogenesis plays a critical role in the growth of cancer because solid tumors need a blood supply if they are to grow beyond a few millimeters in size. Tumors can actually cause this blood supply to form by giving off chemical signals that stimulate angiogenesis.
Thanks google
The answer is A is you agree no problem im here to help if you disagree its ok i tried my best to help just saying
Surface tension I think. which makes it feel like you are hitting concrete when you fall onto water from extreme heights.