Which kingdom is part of the Domain Eukarya?

The correct choice is Kingdom Protista because it consists of a diverse group of eukaryotic organisms, which are characterized by having complex cells with a nucleus and organelles. The domain Eukarya is defined by organisms that possess eukaryotic cells, and Kingdom Protista fits this definition.

In contrast, Kingdom Monera is made up of prokaryotic organisms, which lack a true nucleus and are simpler in structure. The options for Kingdom Archaea and Kingdom Bacteria also consist of prokaryotic organisms. Therefore, they do not qualify under the domain Eukarya, which is exclusively for organisms with eukaryotic cellular structures.

Kingdom Protista includes a wide variety of organisms, such as algae and protozoa, highlighting the complexity and diversity found within the Domain Eukarya.