The correct answer is: D. Plutocracy.
A plutocracy is a form of government in which the most powerful people are the wealthiest. This can happen in a number of ways, such as through bribery, corruption, or simply by having more money than anyone else. In a plutocracy, the wealthy are able to use their money to influence the government in their favor, often at the expense of the poor and the middle class.
An oligarchy is a form of government in which a small group of people hold power. This group can be made up of the wealthy, the powerful, or the elite. In an oligarchy, the ruling group often uses its power to benefit itself at the expense of the rest of the population.
An aristocracy is a form of government in which power is held by a small group of people who are considered to be the best qualified to rule. This group is often made up of the wealthy, the educated, or the powerful. In an aristocracy, the ruling group often uses its power to benefit the entire population.
A pantisocracy is a form of government in which everyone has an equal say in how the country is run. This type of government is often based on the idea of equality and democracy. In a pantisocracy, the government is run by a group of people who are elected by the people.
In conclusion, the correct answer to the question “Government by rich” is: D. Plutocracy.