A successful teacher is one who is:

Concept

Effective teaching balances care for learners with clear, consistent classroom expectations. Empathy builds trust, while fair discipline protects an orderly environment for learning.

Application

The pairing “compassionate and disciplinarian” brings these complementary qualities together: concern for learners and firm, fair boundaries.

Contrast

• “Quiet and reactive” describes limited expression followed by responses to events; it does not present a proactive teaching balance.

• “Tolerant and dominating” combines acceptance with controlling authority, which creates tension rather than a balanced teacher–learner relationship.

• “Passive and active” joins opposing modes without explaining when each is pedagogically appropriate.

Result

Therefore, the best-supported choice is “compassionate and disciplinarian”.