The Appalachian mountain range is made of folded rock layers. The presence of this folded range is evidence of which process of mountain formation? A. separation of two fault blocks
B. collision of two plates with each other
C. eruption of volcanoes near each other
D. deposition of sand and rocks from rivers

Fold mountains When plates collide or undergo subduction (that is – ride one over another), the plates tend to buckle and fold, forming mountains. Most of the major continental mountain ranges are associated with thrusting and folding or orogenesis.

Explanation:c:eruption of volcanoes near each othher..

sorry, but you do not have posted the diagram.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.