This question is incomplete; here is the complete question:
Screenwriters would be least involved in planning which type of film?
A. Mystery
B. Historical fiction
C. Documentary
D. Adventure
The answer to this question is C. Documentary
Step-by-step explanation:
The role of screenwriters is to create different elements in a film including the dialogues between the characters, the actions or events that occur, and even the general story that is told. Due to this, screenwriters play an essential role in fiction based films which include genres such as historical fiction, adventure, science fiction, etc.
However, screenwriters are less involved in genres such as documentaries because the purpose of documentaries is to show reality, this implies there are no fictional characters or one fictional story playwriters should create.