A geologist finds ripples preserved in ancient sedimentary rocks that look like ripples made by water in mud . He concludes that there was once water in that location that created the ripples . Why is this conclusion reasonable ?

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion

so whats the answer

i believe your answer would be c.. : )