Hello sorry for the late replay but my best answer is going to be
A.)
Friction works in the direction opposite of motion
Answer:
B is most probably the right answer since it has the both hydrophollic and characteristics.
Not 100% sure though
Answer:
Regenerative medicine
Explanation:
Regenerative medicine can be defined as a branch of translational research in tissue engineering and molecular biology that deals with replacing, engineering or replace human or animal cells, tissues or organs to restore normal functioning.
It also develops method to regrow, repair or replace damaged or diseased cells, organs or tissues.