题目选项分析

Under a provision of the Constitution that has never been applied, congress is required to call a convention to consider possible amendments to the document when formally asked to do so by the legislatures of two-thirds of the states.

Under a provision of the Constitution that was never applied,there has been a requirement that Congress call a convention for consideration of possible amendments to the document when asked to do it formally by the legislatures of two-thirds of the states.