20.     the efforts of one good worker can often motivate others to reach their potential through a process called

I believe the correct answer is: modeling.

     When efforts of one good worker can often motivate others to reach their potential, to that process is referred as – modeling. The good worker is a model or certain “idol” in this situation which inspires others to work harder, or to install values at work.

     This type of effect is the process of learning by looking at the idol/model called social learning theory. This theory was represented by Albert Bandura and it considers that people are learning through ” the willingness to imitate behavior observed in others”.

an independent person

explanation:

no matter if they "confine" a person/brain/ spirit yet independent-minded thoughts and feelings   are still "free"