Read the excerpt from Act I of The Importance of Being Earnest. Lane. I attribute it to the superior quality of the wine, sir. I have often observed that in married households the champagne is rarely of a first-rate brand. Algernon. Good heavens! Is marriage so demoralising as that? This excerpt best illustrates which feature of a comedy of manners?

The comedy of manner is the genre in the realistic, drama-comedy that depicts the manner and affectations of contemporary society. It is the way in which a character is shown in the comedy scene by taking into consideration all the standards of society.

The feature of comedy of manners best illustrated in the excerpt is the class difference.

This excerpt shows the class difference as the comedy of manner because it has compared the champagne to the first-rate brand of drinks. It is attributed to the superior quality of the wines.

To know more about the comedy of manner, refer to the link:

https://brainly.com/question/14854579