Respuesta :
The best revised version you listed is the first one, "Modern novelists often expand to other genres, such as screenwriting." This is because you want to avoid using words such as "things" and "Stuff" when writing.
I would also like to add that another good way to write this sentence would be to say "artistic forms" or "means of expression", or another similar phrase rather than "genres" because screenwriting itself is not a genre.
Answer:
Modern novelists often expand to other genres, such as screenwriting.
Explanation:
Edge 2020 (Just finished it and got 100)