Answer:
If you write about a topic in a short article, your coverage will be less comprehensive than it would be in a full-length book.
The first priority for writing a thesis for your article is making your main idea clear.
Roald will extract that passage from the journal and include it in his article to show how the scientist had a unique and distinctive way of looking at the problem.
Explanation:
If I had gotten the lowest mark in the assignment, I would ask myself about the reason for this bad grade. A very probable reason is that I had not studied enough- probably I was distracted by other activities, such as watching a movie. However, since it resulted in a bad grade, I would want to change this behaviour next time and I would prepare for the exam instead of watching the movie!