The subarctic region has Mountains, Rivers, lakes, Ponds Tundra and Plains EXCEPT Tropical forests.
C. Tropical forests
Step-by-step explanation:
The mountains in the Subarctic region include the Fennoscandia, the Kolyma Mountains and the mountains of the Tai Myr Peninsula. There are several lakes, ponds, Rivers, Streams, and wetlands.
Thermokast lakes are a greatest source of freshwater ecosystem. Tundra region is the region with very less vegetation and plain lands. Therefore, In Arctic and Subarctic region, there is less vegetation and plain lands covered throughout. There is Taiga forest vegetation not the tropical forest.