PLEASE ANSWER FAST!! How did terraces improve Chinese agriculture?

A. Sped up plowing and sowing of fields
B. Created more farmland for raising crops
C. Made it easier to harvest grain and other crops
D. Simplified the process of cleaning seeds from plant fibers

Enlightenment thinkers most contributed to the development of whichpolitical idea? a. religious leaders should play the largest role in establishing asociety's laws.b. democratic governments have the responsibility to protect humanrights.c. criminals must be punished harshly if a society is to maintainorder.d. written constitutions place unnecessary restrictions ongovernments' powers.