The correct answer is: B. Protista
Amoeba is a single-celled organism that belongs to the kingdom Protista. Protists are eukaryotes, which means that their cells have a nucleus and other organelles. They are also heterotrophs, which means that they cannot make their own food and must consume other organisms to survive.
Protists are a diverse group of organisms that can be found in a variety of habitats, including water, soil, and even the human body. They play an important role in the environment, as they help to break down organic matter and recycle nutrients.
The other options are incorrect because:
- Option A, Plantae, is the kingdom that plants belong to.
- Option C, Monera, is the kingdom that bacteria belong to.
- Option D, Prokaryotae, is a more general term that refers to all organisms that do not have a nucleus. This includes bacteria and archaea.