"excavating Earth’s surface to reach veins of clean coal" would be the best option because this is done fairly close to the top of the Earth's surface. It's a controversial and dangerous practice.
A Roosevelt hinted that the US could not always remain neutral......
Answer:
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.
Explanation: