B. Tianamen Square, which incidentally you are not permitted to speak of or know about in China.
Answer:
A
Explanation:
A because each state has a certain level of law that limits what is allowed in the united states an what is illegal
I believe the answer is: D. incubation.
Incubation refers to the process where a certain individual do not focus their mind on correct goals which eventually reduce their overall productivity.
Even though the process of incubation already introduced for a long time, we still haven't found a concrete proof that explain why it happened.