Final answer:
The correct answer is option D. Cannot be determined.
Step-by-step explanation:
The assumption that citizens of monarchic nations pay more tax than citizens of republican nations is not stated in the provided information and thus cannot be confirmed. While it is accurate to describe a monarchy as a government in which authority resides in one individual, this does not necessarily correlate with higher taxation. Similarly, the idea that a monarchical nation cannot be a republican nation is contradicted by historical examples, such as the Dutch Republic, which possessed hereditary rulers yet was considered a republic.
Whether a monarchy is constitutional or absolute also affects its governance. In a constitutional monarchy, the monarch's powers are limited by law, and the nation may have democratic elements. Oppositely, an absolute monarchy concentrates power without the same legal limitations.
Throughout history, forms of government have evolved greatly, and today, many constitutional monarchies exist, in which monarchs serve largely ceremonial roles and have limited political power.