The correct result of the French and Indian War from the options provided is:
Britain gained control of land east of the Mississippi River.
After the war, the Treaty of Paris (1763) resulted in Britain gaining significant territory in North America, including lands east of the Mississippi River. The other statements contain inaccuracies or are less accurate representations of the outcomes of the war. For example, the Proclamation of 1763 did not "ban" Native groups from settling on new land; it restricted colonial expansion westward to ease tensions with Native Americans. France was indeed forced out of most of North America, but the western part was not the United States at that point, as the United States did not exist as a nation until later. Spain did receive the territory of Florida back from Britain, but their controls were not uninterrupted during that period.