Within the last paragraph of the author's speech, he uses the words mine and mines repeatedly. Why does the author repeat these words so frequently?
A) The author found out that most miners endured long and hard hours of working underground.
B) The author seeks to emphasize the importance of mines and their unique workplace environment.
C) The author had fond memories of the mines because he had explored them several times while growing up.
D) The author had intended for his research to be about the "mines," but was surprised to find out that the mines are nothing