Final answer:
True District Court decisions can significantly vary among the districts due to different judicial interpretations and the expansive nature of district court jurisdictions that do not cross state lines, contributing to disparities in rulings.
Step-by-step explanation:
The statement that District Court decisions can vary significantly among the districts is true. This variation is due to the fact that judges may interpret laws differently, leading to the fact that there is not always a uniform application of the law even within the same nation. Additionally, the jurisdiction of the U.S. district courts has been expanded over time to include constitutional issues and matters of federal law. However, no district court crosses state lines, and because each operates within its own district, disparities in rulings may occur. The multiple district courts serve as trial courts where cases are first heard, with the potential to move up to higher courts if appealed.