Why is this the answer?

The answer is record because this clever riddle uses a super tricky word to describe an amazing achievement in sports, games, and even in life. The "record" in this riddle is not a vinyl disc you play music on; it is the absolute best, fastest, or highest result that anyone has ever done in a competition. Let us look at the first part: "Break it and it is better." Imagine you are in a high jump contest. If the current world record for jumping is six feet, and you jump six feet and one inch, you have just "broken" the old record. Breaking a record is the goal of every athlete because it means you have done something better than anyone in history, and that is a wonderful thing for you and your team. As soon as your foot touches the ground after that super high jump, your new, better height of six feet and one inch is "immediately set" as the new record. You do not have to wait for a special ceremony or for an official to agree; the new standard for the whole world is created right at that moment because a new best performance has been achieved. Now for the last part: "and harder to break again." Your new record is the highest one ever, so the next person who tries to jump has to clear an even higher bar to beat you. Since you have pushed the limit further than anyone before, the new mark is now much tougher to reach. This makes the new record incredibly difficult to break because the level of skill and effort needed has just gone up. Each time a record is broken, the new one gets better and better, which means the challenge of breaking it again becomes a bigger and bigger mountain to climb. This is why the word "record" fits all the amazing clues in this puzzle so perfectly!