mikhail gorbachev's policy of perestroika was an attempt to

somewhat restructure the soviet union, while maintaining union

return to the communist style of stalin to keep the nation intact

bridge relations with the united states and limit nuclear weapons

spread soviet style communism to other nations of the world

Explanation:

In the second step of effective communication, emphasis is laid on the the concise and clear introduction of information and communication. In other words, it is the first step to present yourself with the information you want to convey clearly and concisely.

If we look into KC's case, he abruptly interrupts his teacher's lecture to ask a question. It portrays his undisciplined action of making a query towards another person.

However, if we look into the other three cases, they all show actions of being considerate and presentable to the other person. Here, the notion of "the first impression is the best impression" is being implied.

The second step of effective communication tries to establish a clear and presentable impression by the conveyor to the receiver.