Final answer:
Option A, Prohibiting Income Taxes, is not considered a purpose of government, as typically, governments enact various forms of taxation to provide for public services and goods.
Step-by-step explanation:
The question seeks to identify which option does not represent a purpose of government. The purposes of government generally include maintaining social order, providing public services, and ensuring national security.
These responsibilities are in line with longstanding philosophical traditions, such as those from Hobbes, Locke, and Hume, all of whom argued some version of the idea that governments exist to protect citizens and provide public goods. Government intervention in economic policy similarly aims to promote a stable and fair economic environment.
In contrast, prohibiting income taxes would not be considered a purpose of a functional government, but rather a policy choice regarding how the government elects to generate revenue. Historically, governments have instituted various forms of taxation to fund public services and goods. Therefore, option A, Prohibiting Income Taxes, is not a purpose of government.