Comparative Political Analysis primarily involves the study of:

Correct option is C

The correct answer is (c). Similarities and differences between political systems.

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Detailed Explanation of Comparative Political Analysis
Comparative Political Analysis (or Comparative Politics) is a subfield of political science that focuses on systematically studying political phenomena across countries. Its core function is to compare and contrast various political units—such as countries, institutions, policies, or processes—to build better theories about why and how political outcomes occur.

Comparison is the Method: The goal is to move beyond studying a single case and use comparison to identify patterns, causes, and effects that are universal or contingent upon specific contexts.
Focus Areas: This field examines the similarities and differences in:

Political Systems: Presidential vs. Parliamentary systems.
Institutions: Electoral systems, judiciaries, legislatures.

Policies: Healthcare, environmental, or economic policies across different states.
Processes: Democratization, revolution, nationalism, or political participation.