Read the excerpt from Act I of The Importance of Being Earnest. Algernon. [Languidly.] I don’t know that I am much interested in your family life, Lane.

Lane. No, sir; it is not a very interesting subject. I never think of it myself.

Algernon. Very natural, I am sure. That will do, Lane, thank you.

Lane. Thank you, sir. [Lane goes out.]

This excerpt best illustrates which feature of a comedy of manners?

an example of class differences
a comparison of country and city life
a commentary on marriage
an illustration of clever wordplay