Explanation

The most accurate statement is that developing countries should invest in primary and secondary education vs. post-secondary education.

This is because:

• Developing countries need to build foundational human capital through basic education
• Primary and secondary education provide the essential literacy, numeracy, and basic skills needed for economic development
• Post-secondary education becomes more important once the basic educational foundation is established
• Investing in basic education has higher marginal returns in developing economies

Option B is incorrect because developing countries typically have lower domestic savings rates, not higher. Option C is incorrect because restricting foreign direct investment generally hinders, rather than helps, economic growth in developing countries.

Correct Answer: A