The eastern ranges are composed of which two mountain chains? a. the rocky mountains and the coast mountains b. the appalachian mountains and the laurentian mountains c. the rocky mountains and the laurentian mountains d. the appalachian mountains and the coast mountains

The correct answer is - B. the Appalachian Mountains and the Laurentian Mountains.

The eastern part of the North American continent is dominated by two larger mountain ranges, the Appalachian Mountains Range and the Laurentian Mountain Range.

The Appalachian Mountain Range is located in the eastern part of the United States, having a roughly northeast-southwest direction. It is one of the oldest mountains in the world and it is well known for being rich with multiple natural resources.

The Laurentian Mountain Range is smaller compared to the Appalachian one, but it is the dominant land form in its surrounding area. It is located in the southeastern part of Canada, and it is also a very old mountain.

B.  the Appalachian Mountains and the Laurentian Mountains

Explanation:

it's actually d for edge-nuity.