Which one of the following National Parks has a climate that varies from tropical to subtropical, temperate and arctic?

Namdapha National Park is the correct answer because its vast altitudinal range (from 200m to over 4,500m) in the Eastern Himalayas allows for a unique climatic transition from tropical evergreen forests at low elevations to arctic conditions at the high mountain peaks. While Khangchendzonga National Park also features high-altitude arctic zones, it lacks the low-lying tropical base found in Namdapha, starting instead at higher temperate elevations. The core concept being tested is altitudinal zonation, where significant changes in elevation create diverse climatic belts and biodiversity within a single geographical area.