One way that sediment is changed to sedimentary rock is by:

a.cementation, a process that occurs in nature but that is unlike anything we humans can observe in the human-made world.

b.cementation, a process that occurs only when humans glue things together.

c.cementation, a process that occurs in nature, and that is similar to processes that can occur in plumbing and other things humans make. cementation, a process that occurs in nature, and that is similar to processes that can occur in plumbing and other things humans make.