Concept:Trade is limited by risks, payment difficulties, and broken diplomatic ties, not by lower import costs.
Explanation:Political instability disrupts production and creates uncertainty, so it hinders international trade.
Low tariffs reduce import costs and actually encourage trade, so they do not hinder it.
Inadequate foreign exchange limits a country’s ability to pay for imports, which hinders trade.
Strained relations between countries can cause sanctions or restrictions, which also hinder trade.
Therefore, the problems are I, III, and IV only.
Answer:D. I, III and IV only