Correct Option
The correct option is Western slope of the Western Ghats.
Explanation
Tropical Evergreen Forests flourish in regions characterized by heavy rainfall (exceeding 200 cm annually) with a short dry season. These forests are warm and humid throughout the year, supporting dense, multi-layered vegetation that retains its green appearance year-round as trees do not shed their leaves simultaneously.
Option Analysis
- Western slope of the Western Ghats Western slope of the Western Ghats: This region acts as a windward side for the South-West Monsoon winds, receiving very heavy precipitation (often above 250 cm). This climatic condition is ideal for Tropical Evergreen Forests, making it one of the primary regions for this vegetation type in India.
- Western Rajasthan Western Rajasthan: This is an arid region receiving scanty rainfall (less than 50 cm annually). The natural vegetation here consists of Tropical Thorn Forests and Scrubs (xerophytic vegetation).
- Deccan Plateau Deccan Plateau: Much of the Deccan Plateau lies in the rain-shadow area of the Western Ghats. It receives moderate to low rainfall, supporting Tropical Deciduous or Dry Deciduous forests rather than Evergreen forests.
- Punjab Plains Punjab Plains: This region experiences a semi-arid to sub-humid climate. The natural vegetation is primarily Tropical Deciduous or Thorny, although extensive agriculture has replaced most natural cover.
Key Takeaway: In India, Tropical Evergreen Forests are strictly confined to high-rainfall zones: the western slopes of the Western Ghats, the island groups (Lakshadweep, Andaman and Nicobar), and the upper parts of Assam and the North-Eastern region.