Final answer:
The phrase 'Practice makes Perfect' is more closely related to the principle of Progression, which involves gradually increasing the difficulty of a task to improve performance.
Step-by-step explanation:
The phrase "Practice makes Perfect" relates to the principle of Progression, which is about gradually increasing the intensity or difficulty of a task or exercise to improve performance over time. On the other hand, the principle of Specificity suggests that training should be relevant and appropriate to the sport for which the individual is training, as specific exercises improve specific areas of fitness or performance. In the context of continuous practice leading towards perfection, Progression is more relevant.
Therefore, the correct answer here would be: B) Progression.