How does the location of el salvador affect how goods are imported or exported?

El Salvador is located on the coast of the Pacific Ocean, which means that likely the goods are arriving by ships, since the sea route is preferred due to its relatively low cost - especially for non-perishable goods.

Additionally, it is located not far from the Panama Canal - which increases its trade possibilities to also include the Atlantic Ocean ports.

Why you put last one a? i think is b.