Final answer:
The underlined sentence 'The primary purpose of government is to provide social services' is identified as the A.)claim of the argumentative essay, indicating the main argument the essay will support.
Step-by-step explanation:
The underlined sentence in the outline "A. The primary purpose of government is to provide social services" is the claim of the argument. In the context of an argumentative essay, the claim is a statement that asserts a particular perspective or idea that the essay is going to support or argue for. It serves as the main argument that will be further backed up with evidence and examples. Scottish philosopher David Hume reasoned that the government's role includes providing public goods which benefit everyone and are important for promoting the general welfare. Governments around the world, including the United States, aim to provide not just public goods but also services like education, health care, and infrastructure, which are essential for the well-being and happiness of its citizens.