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Echo effect.
The echo effect is a tool in social interactions that involves restating a speaker's words or message back to him or her. The echo effect is a useful and effective social tool wherein, you can restate a speaker's message to clarify it and demonstrate your understanding of it. Furthermore, people who adopt this technique in social interactions are perceived as more empathetic and caring compared to people who do not use this technique.
You have to be 21 and usually if under 25 you must pay an extra fee of $10 however some companies do not rent cars out to those under 25 at all.
Answer:
b) the united states and russia
Explanation: