International trade is an example of a foreign policy issue.
Option: D
Explanation:
Foreign policy was taken to deal with the trade related issues. International trade mainly deal with import and export of quality products. Military, environment related issues, sanctions, intelligence are under the authorization of foreign policy issues.
Several factors are there which influence foreign policy issues: geographical factor, social structure, status of economic development, cultural and historical factors. Foreign policies are strategically important as it deals with international trade and issues. President has the supreme power to solve all problems related with foreign policy.