This selection mainly
A provides information about the history of the Tour de France and how it has changed over the years.
B explains how a cyclist can prepare and participate in the Tour de France.
C encourages athletes from other countries to enter the Tour de France.
D describes what spectators can expect to see while watching the Tour de France.
The correct answer is A provides information about the history of the Tour de France and how it has changed over the years.
### Explanation:
The selection primarily focuses on the historical aspects of the Tour de France, discussing its evolution and the significant changes it has undergone. This indicates that the main purpose is to inform readers about the race’s background rather than giving preparation tips, encouraging participation, or describing the spectator experience. If you need more detailed assistance or have a follow-up question, feel free to ask!