6377. His judicious handling of the matter saved the situation from going out of control.

✅ The correct answer is option C.
Nervous : easily agitated or alarmed.

Helpful : giving or ready to give help.

Sensible : done or chosen in accordance with wisdom or prudence; likely to be of benefit.

Cautious : (of a person) careful to avoid potential problems or dangers.

Judicious : having, showing, or done with good judgement or sense.

Synonym of Judicious is Sensible