Quite sure C is correct ;) remember that humans are also placental mammals.
The answer is A because in the process of mitosis and meiosis chromosomes are single-stranded groups that are condensed to chromatin when the process of division of cells chromosomes replicate to make sure that the new daughter cells received the correct number of chromosomes
Nucleic acids would be the answer to your question
Snake goes to frog frog goes to bug bug goes to leaf and leaf goes to soil
