Palaces and forts built by rulers of princely states are now important:

The correct answer is: A) Heritage sites.

Palaces and forts built by rulers of princely states are now important heritage sites. They are a reminder of the rich history and culture of India. They are also popular tourist destinations.

Option B is incorrect because government offices are usually located in modern buildings.

Option C is incorrect because military bases are usually located in remote areas.

Option D is incorrect because agricultural lands are usually used for growing crops.