In the balance theory, a system (composed of observer, person, and object) is referred to as a .

TRIAD

Explanation: The balance theory proposed by Fritz Heider is a theory that explains that the behaviours of an individual are not stable because of the communication and behaviour of other people.

A triad is basically a grouping of three. In the balance theory, a system (composed of observer, person, and object) this grouping of three is referred to as a TRIAD.

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.