Question

a landlocked country has valuable mineral resources, but it lacks enough highways and railroads to move them to major seaports in neighboring countries. which factor is most directly limiting this countrys ability to trade its minerals efficiently?

• access to transportation networks and trade routes
• a lack of valuable natural resources
• the countrys climate zone and vegetation
• low global demand for minerals

Explanation:

The country has valuable mineral resources, so "A lack of valuable natural resources" is incorrect. Climate zone/vegetation isn't related to moving minerals, so that option is out. The problem is about moving resources, not demand, so "Low global demand for minerals" is wrong. The country lacks enough highways/railroads (transportation networks) to move minerals to seaports (trade routes), so "Access to transportation networks and trade routes" is the limiting factor.

Answer:

A. Access to transportation networks and trade routes