Concept:Foreign policy is the plan a sovereign state adopts to manage its relationships with other nations.
Explanation:Every government makes decisions that address both internal and external affairs.
Internal matters are handled by domestic or national policies.
Matters that concern other countries, however, require a different kind of guideline.
Such guidelines cover diplomacy, trade agreements, security alliances, and international negotiations.
They are designed to promote and protect the nation's interest within the international community.
For this reason, the strategy that a government uses while dealing with other nations is called foreign policy.
Therefore, the option that correctly matches this description is foreign policy.
Answer:D. foreign policy