Step 1: Quantify the average annual precipitation for each geographical area.
- C. Kutch in Gujarat: Characterized as an arid, desert environment, this area experiences minimal precipitation, typically below 400 mm per annum.
- A. Karnataka Plateau: Situated in a rain-shadow zone to the east of the Western Ghats, this region receives moderate rainfall, generally between 500 mm and 1000 mm annually.
- D. Eastern Coastal Plain: This territory benefits from rainfall derived from both the Southwest and Northeast monsoon systems. Its annual precipitation is substantial, usually falling within the 1000 mm to 1500 mm range.
- B. West Coast: Located on the windward slopes of the Western Ghats, this region is subjected to exceptionally heavy orographic precipitation from the Southwest monsoon. It ranks among India's wettest locations, with annual rainfall frequently surpassing 2500 mm to 3000 mm.
Step 2: Order the identified regions according to ascending rainfall totals.
Based on the preceding estimations, the accurate sequence is:
Kutch in Gujarat \(\rightarrow\) Karnataka Plateau \(\rightarrow\) Eastern Coastal Plain \(\rightarrow\) West Coast.
This sequence corresponds to the identifiers C, A, D, B.