Which sentence best supports the idea that writing science fiction allows an author to be imaginative? A science fiction writer has to learn a lot about scientific topics and theories.
A science fiction writer is different from a fantasy writer in many ways.
A science fiction writer might invent new technologies that do not yet exist.
A science fiction writer is a type of author, but there are other types as well.

A science fiction writer might invent new technologies that do not yet exist.

Explanation:

It is important to check the context clues, so it'll be easy to choose the correct answer.

The question above mentioned the term "science fiction." This term is all about imagination and things that are related to the future like "time machines." The concept of this term is very advanced–mostly involving technologies that are not existing at the moment. This makes the science fiction writer very imaginative and flexible with his ideas.