Step 1: Understanding coalition government.
A coalition government is formed when multiple political parties join together to form a majority in the legislature. This generally happens when no single party gains a clear majority.
Step 2: Analyzing the options.
(A) One-party system: No coalition is possible, as only one party dominates.
(B) Two-party system: Rarely requires coalition, since one of the two usually wins a majority.
(C) Multi-party system: Correct — coalitions are common because multiple parties contest and no single party usually wins outright majority.
(D) None of these: Incorrect, because option (C) is valid.
Step 3: Conclusion.
Thus, the possibility of a coalition government exists in a Multi-party system.