Answer:
Because the state government is under the supervision of the federal government, therefore federal government controls that affairs of the state government
We need them to communicate with others.
Language is something significant to human culture and has been for thousands of years.
The answer to this question is b. <span>requires more tact than oral communication
In written communication, we couldn't directly explain what we mean if there is a misunderstanding happen because we're not physically there when the receiver read it. Therefore, people need to be more careful in doing written communication compared to verbal.</span>