Ais a geographic region characterized by ground that stays frozen year round. a. taiga b. steppe c. tundra d. highlands

c. tundra

Explanation:

The tundra is a region that is characterized by the biome where the tree growth is limited by the snow or low temperatures.   The word has its origin in the Russian world. and the vegetation consists of the short shrubs and the grasses and the lichens and the tundra occurs in the northern zone with an area of about 11,563,300 km square, and climate type is ET according to Koppen. Winter and summer are the two main seasons of the tundra climate and winters are very cold and dark and summer are mild. The alpine tundra does not contain any trees as the high latitude blocks their growth and the temperatures do not exceed above 10° C.