To solve the problem of arranging the historic capital cities of Indian kingdoms in order of their geographic locations from north to south, we need to identify the locations of each city.
Based on this geographical information, the correct order from north to south is:
Thus, the correct answer is (a)-(c)-(d)-(b).
Let's evaluate the provided options:
Hence, the correct option is (a)-(c)-(d)-(b).
Step 1: Geographic locations of the cities.
Step 2: Arrange from north to south.
The correct order is Kannauj (a) → Pataliputra (c) → Rajahmundry (d) → Karur (b).
Final Answer: (2)