What are the applications of Bone Marrow Cells?

Which of the following matches the organisms described with the correct domain? a. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycanb. archaea--multicellular, eukaryotic organisms that do not have cell wallsc. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sourcesd. bacteria--unicellular, eukaryotic organisms that always lack cell walls

Adigestive system that is a series of tubes beginning at the mouth and ending at the anus is a digestive system.

Which description provides the best objective summary of the article in the passage?