Pls help

Me i really need which of these was an accomplishment of the han dynasty? the invention of the seismograph finding a water passage to europe the invention of the ballpoint pen the invention of the abacus

What was the significance of the british reform act of 1832? a. voters were given the right to vote by secret ballot b. members of the middle class were permitted to run for parliament c. members of the working class demanded and received better living conditions d. farm workers, factory workers, and women were given the right to vote

Which phrase best completes the diagram?