Final answer:
A popular novel would be the best source material for Luka's fictional story about a physicist.
Explanation:
The best choice for source material for Luka's fictional story about a physicist would be a popular novel.
Novels often provide in-depth character development, engaging plotlines, and detailed settings that can serve as rich sources of inspiration for creating a fictional story. They offer a wide range of themes and genres, allowing for versatile storytelling possibilities.
For instance, novels like 'Frankenstein' by Mary Shelley or 'The Time Machine' by H.G. Wells are examples of how fictional stories about scientists and their inventions can be captivating and influential for aspiring writers.
Learn more about fictional writing inspiration here:
https://brainly.com/question/42241961
