Which of the landforms on your map represent plains

I don't really understand the said question, but if it is about a map, the region or the label in the map that represent the plan is inside the line of the map and doesn't have a legend of a mountain. I hope you are satisfied with my answer and feel free to ask for more if you have question and suggestions 

plains are represented by low greenish flat lands

Plain is an extensive area  of low flat lands covered by vegetation such as trees, shrubs and grasses.They are formed by deposition of sediments They are also formed by flow of lava volcanoes on land On the map representation is done by greenish flat lands and greenish color denotes the vegetation

Explanation:

Plain is an extensive area  of low flat lands covered by vegetation such as trees, shrubs and grasses.They are formed by deposition of sediments They are also formed by flow of lava volcanoes on land On the map representation is done by greenish flat lands and greenish color denotes the vegetation