01 In the Köppen classification, which letter denotes the polar climate group?
Answer and explanation
Correct answer: C. E
Explanation: The capital letter E denotes the polar climate group in the Köppen system. It includes ET tundra and EF ice-cap climates; the warmest month remains below 10°C. D represents cold continental or snow climates, C represents temperate climates, and A represents tropical climates. Since the question asks for the group letter, E is the correct answer.