Step 1: Understanding the term.
Oligarchy is a form of government in which power resides with a small group of people who rule over the larger population.
Step 2: Analyzing the options.
(A) Monarchy: A monarchy is a form of government where one person (a monarch) rules, not a small group.
(B) Oligarchy: Correct — Oligarchy refers to a state where a small group governs the many.
(C) Plutocracy: Plutocracy refers to a government ruled by the wealthy, which is a form of oligarchy but with a focus on wealth.
(D) Autocracy: An autocracy is a system where one individual holds absolute power, not a small group.
Step 3: Conclusion.
The correct answer is (B) Oligarchy, as it describes a form of government where the few govern the many.