Discipline can help to improve on one’s dedication & determination. Working everyday and pushing yourself to work harder can increase your abilities in the sport. Determination to be better and become the best you can be. Your mindset about yourself and your abilities is crucial in working towards athletic goals as it is proven to be more difficult with a negative mindset
The phrase in the excerpt from a 1964 interview with Malcolm X indicates that he is explicitly stating an opinion is this "<span>{I don't think that it} serves any purpose for the {leaders of our people} to waste their time fighting each other needlessly."</span>
I don't exactly get what you are saying, so I'm practically guessing. If you restate I will gladly help you.
Both A and C are true but if you are to only chose one i would say A.
