The correct option is A A-Monera; B-Protista
Kingdom Monera generally comprises unicellular organisms with a prokaryotic cell organisation. They lack well-defined cell structures including the nucleus and other cell organelles. Examples: cyanobacteria, mycoplasma, and bacteria.
Organisms belonging to kingdom Protista are simple, unicellular, and eukaryotic. Most of the protists live in water, some in moist soil or even in the body of human and plants. Example: amoeba and euglena.