The correct answer is D) They are rigid and sturdy, therefore ideal for scientific trials.
What is so unique about embryonic stem cells is that they are rigid and sturdy, therefore ideal for scientific trials.
Scientists and biologists are amazed by stem cells because these kinds of cells have the potential to develop once, and twice, into unlimited potential. Embryonic stem cells can be transplanted to help people who suffer diseases of the Hear, or Cancer, or Parkinson.