Is clarity a physical or chemical property?

The answer for #3 is c but i don't know why

Which of these sequences lists the correct order for the creation of sedimentary rock from sediment? a. deposition, burial, compaction, cementation b. burial, deposition, compaction, cementation c. compaction, deposition, burial, cementation d. cementation, deposition, burial, compaction

If two atoms are bonded to a central atom with no lone pairs, how will they be arranged