Explanation: Keynesian economics is critical of the free market’s ability to solve all economic problems. Instead, it advocates for governments to create demand (people’s ability and willingness to spend money). Choice (A) reflects this idea. If the government can aid in both health-care costs and in post-retirement income, people would have more disposable income to keep the economy healthy. Choices (B), (C), and D) are incorrect because they contradict Keynesian economics.