Explanation:
International relations allows nations to cooperate with one another, share information as a way to face global issues that go beyond any particular country or region.
The correct answer is number 2. Ambivalence.
Ambivalence refers to the state of having mixed feelings or different ideas about something or a person. In the given situation, Brian had the feeling of ambivalence, since a passerby had smiled on him, which possibly made him think about different ideas that the person may like him or knows him.
Yay, points! I like points.