Right choice is (d) Drugs, peptides, viruses, bacteria
The explanation: A large variety of drugs, peptides or proteins including antibodies and viruses and bacteria can be incorporated into liposomes. Water-soluble drugs will be trapped in the aqueous compartment while the lipophilic ones are incorporated in the lipid phase of liposomes. They are available in various sizes and have the ability to incorporate both water and lipid soluble drugs.