I believe it is D. Just from context
The author uses anecdotes by making use of short histories which show important discoveries
<u>Explanation:</u>
The story "luck favored the prepared" shows the various important discoveries that have been done by the various scientists which have helped the scientists to improve the life of the people and the discoveries have had a great impact on the life of the people.
The author gives some short stories in the history about the important discoveries to prove his point and also tells about the importance of hard work and the efforts put in by the people.
I think it would be C because you always do the authors last name first!
