Respuesta :
Answer:
B
Explanation:
Sedimentary rock is layered. That makes A wrong, but it leads to another observation.
Things can die and think sink to the bottom of an ocean or sea or river or lake bed which over time changes. So you might find fossils which is the answer.
C is incorrect because there are much harder substances than sedimentary rock.
Answer:
B.May contain fossil.
Explanation:
These rocks are formed with the deposition of materials broken down from pre-existing rocks, followed by compaction and cementation