Answer:
number 1 is the most logical
Federalism- in the U.S. power is divided among state, local, and federal government.
The answer to this question is: Physiological noise
Physiological noise refers to the things that could become a distraction during a communication process that is caused by our physical condition.
Another example of a physiological noise would be if someone's eardrum is damaged so he/she can't hear properly
It should be “ethnic groups were fighting with each other for control” or A!