Great Smoky Mountains or Green Mountains are part of the Appalachian Mountains. Hence, option A holds true.
What is the significance of the Appalachian Mountains?
Appalachian Mountains, or simply Appalachians, are the mountains located in the eastern parts of the American region. They are located at over 6000 feet over the seawater level.
The Great Smoky Mountains are the mountain ranges in the North American region. The Great Smoky Mountains are a sub-range of the Appalachians, and form part of the Blue Ridge Province.
Hence, option A holds true regarding Appalachian Mountains.
Learn more about Appalachian Mountains here:
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