Oligarchy is the political system that is run by a group of noble families or wealthy members of a society. The term Oligarchy was first used by the great Aristotle for describing the powers that were held by a very small and highly privileged group. These people often misused their powers and treated the people under their rule very poorly and also used them to satisfy their selfish needs. It has been commonly seen that the rulers that believed in Oligarchy actually selected people on herediterary basis and not based on merit.
Taking an educated guess here -- I think it would be 1, 3, and 4 which all seem pretty reasonable.
The answer is D) Constitutional Monarchies.
He beat women until they were black and blue
Mao's Red Guards started harassing Chinese intellectuals who supported capitalism
Mao's Red Guards ensured that all schools in China taught from Mao's Little Red Book.