Question

local government
power limited to that delegated by the state
exercises power under the 10th amendment
approves annual budget

Explanation:

The content is about local government powers, related to political systems and governance, which falls under the subfield of Politics in Social Science. The 10th amendment, delegation of state power, and budget approval are political - governance related concepts.

Answer:

The subfield that best applies is Politics (under Social Science). The content describes local government power (limited by state delegation, 10th amendment - related, budget approval) which are key political - governance topics.