Step-by-step explanation:
The MOST ACCURATE summary of the development of the central ideas in the text "Batter Up: The Baseball Bat" is that "Baseball bats have changed." The text discusses the history and evolution of baseball bats, from their early origins to modern-day variations. It covers various materials used to construct bats, as well as the impact of changes in rules and regulations on the development of bats. While the text does touch on changes in baseball equipment and the game itself, the main focus is on the evolution of the baseball bat. Therefore, option D is the most accurate summary of the central ideas presented in the text.