Answer:
b. DNA/RNA
Explanation:
Prokaryotes, eukaryotes, and viruses are composed of DNA or RNA molecule. DNA is a molecule which contains genetic information about growth, development, functioning and reproduction of all living organisms. Prokaryotes are organisms which have no true nucleus while eukaryotes have true nucleus. True nucleus means membrane present around the nucleus. Virus is the only organism which is considered as both living and non living.
