Which one of the following is most likely to strengthen South Korea's comparative advantage in the production of high-capacity memory chips?
A uniform percentage increase in labor productivity across all sectors of the South Korean economy
An increase in the relative productivity of South Korean semiconductor engineers compared to workers in other domestic sectors
A rise in the wages of South Korean semiconductor fabrication workers, unmatched by any productivity gains
An appreciation of the South Korean Won, which increases the export price of memory chips in foreign markets
