Answer:
<em>B. The Ural Mountains separate European Russia from Asian Russia.</em>
Explanation:
The Constitution provides that an amendment may be proposed either by the Congress with a two thirds majority vote in both the House of Representatives and the Senate or by a constitutional convention called for by two thirds of the State legislatures.
If you meant could then the next one in line would be the speaker of the house.
The answer to this question will be B