Demeter was the goddess of corn, grain, the harvest, the Earth, agriculture, and fertility in general.
Constitutional monarchy means that the parliament or the legislature makes the rules and the King of the country goes along with those rules. King James II of England refused to follow the constitutional monarchy and was kicked out through the revolution of 1688. This gave rise to constitutional monarchy in England.
Option B
0.5 km
0.5 km = 50000 centimetres