His arrogant behaviour made him successful in his trade.

Answer: Option B

Arrogant : having or revealing an exaggerated sense of one's own importance or abilities.
Flattering : full of praise and compliments.
Humble : having or showing a modest or low estimate of one's importance.
Polite : having or showing behaviour that is respectful and considerate of other people.
Pleasant : giving a sense of happy satisfaction or enjoyment.

Antonym of Arrogant is Humble