Even though there are gaps in the fossil record, some of the most direct evidence for evolution comes from fossils called fossils that illustrate how certain major transformations in life forms occurred. Select all that apply.

the answer to your question is sperm

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation:

i believe the answer would be b. hope it : )