Out of the four alternatives, select the alternative which is the best substitute of the phrase.
"Courteousness and refinement of manner."

* Urbanity means courtesy, refinement, or elegance of manner.
Plaudit means an expression of praise or approval.

Adulation means excessive admiration or flattery.

Profanity means blasphemous or obscene language.
Therefore, urbanity is the correct one-word substitute.