Q: _________ are one-celled organisms with a nucleus which cause diseases such as malaria.


Read this paragraph and choose the correct option from the provided answers:

Protozoa are one-celled organisms with a nucleus, making them eukaryotic organisms. They cause diseases such as malaria. Malaria is a serious disease that is common in warm climates. The protozoa infect people when they are bit by a mosquito. More than a million people die of malaria each year. Other protozoa cause diarrhea. An example is Giardia lamblia ( Figure below ).

 Choices:

- fungi

- mosquitos

- larvae

- protozoa


A:
protozoa