This gives us a similarity between trade in manufactured goods and trade in services rather than a difference. Trade agreements may cover both kinds of trade, but we still don’t know why an increasingly service-based economy leads to a decrease in international trade engagement.

(B) gives a similarity between service employment and manufacturing employment. It doesn’t connect either to international trade or provide an explanation for why increased service employment and decreased manufacturing employment lead to decreased international trade engagement.

This provides a difference in the market for services as opposed to manufactured goods. Because services are delivered in person, markets for services are local. Thus, if an economy is increasingly service-based, it will engage in less international trade.

This may explain why the country is becoming more service-based, but it doesn’t explain why a service-based economy is less engaged in international trade. We need an answer that links the shift from manufacturing to services with a drop in international trade.

We need an answer that explains why more services in the economist's country lead to less international trade. (E) only says that some services are cheaper abroad but doesn’t connect this to the economist’s country's level of international trade.