Answer :
When a country establishes foreign policies, the best intrests are those of the country itself.
The correct answer is A.
A country's foreign policies are self-interest strategies chosen by the state to safeguard the country's security and to protect its interests in the world.
The country's national interests always come first and they are always a priority in any kind of foreign policy making. Foreign policies can be accomplished through peaceful negotiations or through exploitation.
Creating the foreign policies is the job of the head of state and/or the foreign minister. The perceived national interests may change constantly, especially during international tensions.
Bearing in mind that foreign policies are made with other foreign nations, they demand a great deal of diplomacy and negotiation skills to obtain the required results. In times of globalization, the goal is to cooperate on an international level and try to reach an agreement that benefits all involved parties.