A teacher is trying to direct his/her student's energy into useful and socially approved channels of expression. This is called:

Correct option is B

When a teacher channels a student's energy into productive and socially acceptable activities, it reflects emotional control. Emotional control involves managing emotions constructively to adapt to societal norms and achieve personal or group objectives. This process includes self-regulation, discipline, and guiding emotional expression to enhance social interactions and productivity.
· Emotional balance refers to maintaining equilibrium in emotions, avoiding extremes of high or low emotional states, and does not specifically address channeling energy into socially approved expressions.
· Emotional insulation involves distancing oneself emotionally from situations to avoid stress or harm, which is different from managing and directing energy positively.
· Emotional tolerance refers to the ability to accept and coexist with emotional discomfort or challenging emotions in oneself and others.
Thus, "emotional control" accurately describes the teacher's efforts in this context.