Answer:
The function best describes the purpose of scenes in a drama is to introduce the new characters.
Step-by-step explanation:
Scenes are used in writing to accomplish several purposes such as introductions to many elements of the story, like 
create an emotional connection between character/s and reader 
dramatize events 
move action/plot forward 
introduce or intensify the conflict 
build suspense 
create change over time 
introduce or reveal character 
introduce themes 
establish mood 
provide resolution
when it refers to the presentation of characters it compiles all the elements that surround the characters in the introduction of the scene.