The answer is B because I got it
Answer:
How did Mandarin become the official language? All of the official spoken languages were once dialects. Mandarin was one of the 10 major dialects in China and it officially became the national language for China in 1911 after Dr. Sun Yat Sen overthrew the Qing Dynasty.
The answer is D. an equal distance with an equal amount of force.
This is because the two cylinders have the same diameter and the liquid inside them will not compress. So when one of the pistons (both pistons are also equal size) is pressed, the same amount of liquid is moved from one to another.