The answer to this question is, according to Fiedler's contingency model, moderate situation control favors a leader who is relationship oriented, which is option (E).
Moderate situations are situations where tasks that need to be done are generally clear, as well as the how-to in completing them. In moderate situations, the aim of the leadership style is supposed to be to improve relationship, and thus, a relationship-oriented leader is best for this kind of situation.
