Final answer:
West of the Eastern Lowlands are the Western Highlands. The main mountain systems include the Rocky and Sierra Nevada in the north, and the Appalachian and Ozark in the south.
Step-by-step explanation:
West of the Eastern Lowlands are the Western Highlands. There are several mountain ranges in this system, including the Rocky and the Sierra Nevada mountains in the north and the Appalachian and the Ozark mountains in the south. Therefore, the correct answer is A) Western Highlands, Rocky, Sierra, Appalachian, and Ozark.
The Western Highlands refer to the rugged terrain and mountainous regions in the western part of a continent. In the context of Europe, the Western Highlands extend across Norway and parts of Britain. In North America, mountain ranges like the Rocky Mountains and Sierra Nevada contribute to the diverse topography of the region and are part of the broader Mountain West area. The Appalachian Highlands is an ancient range located in the eastern portion of North America.