Synonym of BRASH

Answer: Option C

Slow : moving or operating, or designed to do so, only at a low speed; not quick or fast.
Cultured : characterized by refined taste and manners and good education.
Aggressive : ready or likely to attack or confront; characterized by or resulting from aggression.
Humble : having or showing a modest or low estimate of one's importance.
Brash : self-assertive in a rude, noisy, or overbearing way.

Synonym of Brash is Aggressive