The statement "According to Gentile, diversification is necessary for the later stages of learning open skills because one must be able to quickly adapt to the changing regulatory conditions of the skill" is true.
In the context of skill acquisition, open skills are those that require an individual to adapt and respond to a dynamic and unpredictable environment. As a learner progresses and becomes more proficient, diversification becomes crucial to enable them to effectively deal with various situations and changing regulatory conditions. By diversifying their skills, learners become more flexible and adaptable, enhancing their overall performance in open skills. Therefore, Gentile's assertion highlights the importance of diversification in the later stages of learning open skills.
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