Clam fossils have been found in many mountain ranges all over the world. Which of the following BEST explains how fossilized clams could have been embedded in the rock of mountain ranges?
A.
fossils formed in sedimentary rock layers, which were uplifted to become mountains
B.
fossils formed in igneous rock layers, and then moved during volcanic eruptions
C.
fossils were moved to the tops of mountain ranges during major catastrophic events
D.
fossils were formed when ocean levels were high enough to cover all Earth's mountain ranges