Answer: A. Using advanced technology in a competition would give some competitors an unfair advantage, just like having a motor in the Tour de France would give him an unfair advantage
Explanation:
Murray's point in the passage is that "Using advanced technology in a competition would give some competitors an unfair advantage, just like having a motor in the Tour de France would give him an unfair advantage".
This can be seen when he said that "he can climb the mountains of the Tour de France faster than all the other competitors".