Final answer:
The correct option is d. Comedies of manners include all options: love affairs, witty exchanges, and revelations of societal scandals, characterizing them as a blend of social commentary and entertainment.
Step-by-step explanation:
Comedies of manners frequently incorporate love affairs, witty and comical exchanges between characters, as well as humorous revelation of societal scandals and intrigues. Therefore, the correct answer to what comedies of manners frequently incorporate is d. all of them.
This type of comedy typically satirizes the manners and affections of a social class, often represented by stock characters. The intricate plot generally revolves around misunderstandings, deceptions, and revelations. Esteemed authors of this comedic style include Oscar Wilde, with his well-known works such as The Importance of Being Earnest.