Option 1 -> Impartial means unbiased and fair, which aligns closely with equitable's meaning of just and fair treatment.
Option 2 -> Regular means normal or occurring at fixed intervals, unrelated to fairness or equality.
Option 3 -> Typical means characteristic or usual, not connected to the concept of fairness.
Option 4 -> Distinctive means unique or special, which doesn't relate to equal or fair treatment.
Hence, Option 1: Impartial -> "Equitable" refers to fairness and justice in treatment or distribution, and "impartial" captures this essence by meaning unbiased and treating all parties fairly without prejudice -> correct