For the first one it isn't A btw
The answer is II China, China is the world leader in trade and manufacturing country in the world(it's the dominant) It's been predicted to be the largest industrial economies by 2050.
The anwser would be A Command/ the government
Answer
Using a good circuit board PCB design and shielding techniques
Explanation
EMI is a disruptive electromagnetic energy that is released by one portion of the circuit and reaches other parts of the circuit via conducted or radiated parts.The energy can affect circuit performance or even damage brain cells when high.It is possible to reduce this effect by employing the method of shielding and ground planes to prevent interference with wireless system operations.
