The correct answer is A. light conversation.
Light conversation is a type of conversation that is casual and does not deal with serious topics. It is often used to fill silence or to make small talk with people you do not know very well.
Gossip is a type of conversation that involves talking about other people in a negative way. It is often used to spread rumors or to make fun of other people.
Backbiting is a type of gossip that is done in a secret or underhanded way. It is often used to damage someone’s reputation or to get them into trouble.
Whispering is a type of speech that is done in a low voice so that other people cannot hear what you are saying. It is often used to share secrets or to talk about someone in a negative way.
In the given question, the ladies are having a light conversation in the drawing room. This is evident from the fact that they are not talking about serious topics and are simply making small talk. The other options are not correct because they do not describe the type of conversation that the ladies are having.