Final answer:
In a one-party system, there is a single dominant political party. Examples of this include the Communist Party in China, while the US's political landscape of Republicans and Democrats depicts a two-party system.
Step-by-step explanation:
In a one-party system, the typical political landscape is characterized by C) A single dominant political party. This means that only one political party holds power and other parties either do not exist or have no real chance of gaining power. For example, China is considered a single-party system where the Communist Party has controlled the government since 1949. In contrast to this, a multiparty system includes several parties that have the opportunity to gain power, possibly forming coalitions. Germany after World War II and the current state of political parties in the United Kingdom illustrate multiparty systems. The United States, with its Republicans and Democrats, is an example of a two-party system, where two major parties dominate the political landscape.