Politically, Ireland is divided between the Republic of Ireland, which covers just under five-sixths of the island, and Northern Ireland, a part of the United Kingdom, which covers the remaining area and is located in the northeast of the island. 在政治上，爱尔兰被划分为爱尔兰共和国（它覆盖了该岛的六分之五）和北爱尔兰（身为英国的一部分，它覆盖了剩余的区域，位于该岛的东北部）。答案为A。