How does economy achieve an outward of the ppf

A. By reducing technological advancement
B. By decreasing investment in capital
C. By limiting employee training
D. By increasing investment in capital goods

D. By increasing investment in capital goods

Investing in capital goods such as machinery, equipment, and technology can lead to an outward shift of the production possibilities frontier (PPF). This is because increasing investment in capital goods can lead to increased productivity and efficiency, allowing an economy to produce more goods and services with the same amount of resources.