Answer: 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.
Based from a huge study that was done with 5,500 respondents who lived in Europe from childhood through late adulthood found that eveningness peaked at ages a. 20 to 21 years.
The study’s results mean that a lot of people are in the stage of peak alertness during the age of 20 to 21 years old. This age is the stage of a person’s life where they are in the young adulthood stage.
The answer is B. because the peaces move making friction which results in the magnetic field.
