The type of novel that deals with the customs of a particular social class is the B. novel of manners.
Here are some examples of novels of manners:
- Sense and Sensibility, Pride and Prejudice, Emma, Persuasion, written by Jane Austen
Select an outfit that is appropriate for the business setting and comfortable as wearing something comfortable will ease your nervousness, and since you are giving speech especially thise with brands or company like names, it is best to be appropriate to show your views that this speech is not for joke and is very somewhat professional.
I think the theme is presented in the melody