His urbane attitude won him many friends.

Answer: Option B

Urbane : (of a person, especially a man) courteous and refined in manner.
Rude : offensively impolite or bad-mannered.
Rustic : lacking the sophistication of the city; backward and provincial.
Violent : using or involving physical force intended to hurt, damage, or kill someone or something.
Indifferent : having no particular interest or sympathy; unconcerned.

Antonym of Urbane is Rustic