The Earth lithosphere thicker in the vicinity of trenches.
<span> The river flows generally west from a source in the </span>Appalachian Mountains<span> to its confluence with the </span>Ohio River<span> near </span>Paducah, Kentucky<span>, and the mouth of the </span>Tennessee River<span>. Major tributaries include the </span>Obey<span>, </span>Caney Fork<span>, </span>Stones<span>, and </span>Red<span> rivers.</span>
The correct answer is <span>c. The most geologically active region of North America is found along the West Coast.
This is correct and can be observed by observing the territories and what constitutes them. </span>
I believe the basement is the best answer
Hope this helps!
