The answer to ur question is A
Answer:
probably not organic, unhealthy
Answer:
If they didn't differentiate then the stem cells would stay the same type and if it somehow kept multiplying then they would just be a massive blob with no actual form or way of functioning.
So this my friend is a Contact Force. Anything that involves pushing, pulling, or creating friction is a contact force. So you will say it’s a contact force. Please Mark me brainliest