Which of the following organisms is found in grasslands?
a. cheetah b. rhea c. pangolin d. hyena

The correct answer is:

b. rhea

Rhea that is mainly found in grasslands because they are large flightless birds and have to use the living organisms and plants that are found in a vast field of grass to survive. Just like their relatives, the emu, they also have to rely on tall grass for protection from prey and to build nests for breeding.

Explanation:

Rheas are from South America only and are restricted within the continent to Argentina, Bolivia, Brazil, Chile, Paraguay, Peru, and Uruguay. They are grassland birds and both species favor open land. The greater rheas exist in open grasslands, pampas, and Chaco woodlands. The greater and puna rheas are currently rated as near-threatened in their local ranges, while Darwin's rhea is of limited interest

there really is life in the deepest part