Concept:Landlocked countries have no direct access to the sea, which creates trade and transport difficulties.Explanation:Goods moving to or from a landlocked country must pass through neighbouring coastal countries.This increases the risk of delay, damage, or theft, so the security of goods becomes a serious problem.Landlocked countries also face high freight costs, not low freight cost.They remain politically independent and can be politically stable, so those options are not problems.Answer:A. security of goods