According to the Ricardian model, differences in labor productivity are due to

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The Ricardian model attributes differences in labor productivity to technological differences among countries. This means that countries with better technology can produce goods and services more efficiently and with lower labor costs, making them more productive than countries with older technologies. The model assumes that all countries have the same natural resources and capital stock, so differences in labor productivity are due solely to technological differences. Options A, B, D, and E do not reflect the assumptions of the Ricardian model.

According to the Ricardian Model, Differences in Labor Productivity Are