The correct answer is A. political and social forces
Explanation:
It is illegal to buy and sell organs in nearly all parts of the world including USA because United States have law called National Organ Transplant Act under which selling of organ for money is illegal so it does not allow any market to exist.
The selling of organs is also considered to be unethical by society because it gives the wrong message that money is important than life. So due to ethical issues, it was necessary to make political laws against buying and selling of body organs like kidneys in the USA.
Therefore, the correct answer to this question is A. political and social forces.
Objects falling are moving quickly, and being able to react immediately is the most useful skill in this situation. Being agile or having good balance isn't helpful if the object has reached the ground before you moved.
