The correct answer is: A. Rajgir
Ashoka’s pillar with single Asiatic Lion Cap is situated at Rajgir, Bihar, India. It is one of the many Ashoka pillars that were erected by the Mauryan emperor Ashoka the Great in the 3rd century BCE. The pillar is made of sandstone and is about 12 meters tall. It is topped by a single Asiatic lion, which is the national animal of India. The pillar is inscribed with edicts from Ashoka, which are decrees that he issued to his subjects. The edicts deal with a variety of topics, including religious tolerance, non-violence, and animal welfare.
The Ashoka pillar at Rajgir is one of the most important historical monuments in India. It is a UNESCO World Heritage Site and is a popular tourist destination.
The other options are incorrect because:
- Option B, Vaishali, is a city in the Indian state of Bihar. It is one of the oldest cities in India and is considered to be one of the birthplaces of Buddhism. However, there is no Ashoka pillar with a single Asiatic Lion Cap at Vaishali.
- Option C, Nalanda, is a town in the Indian state of Bihar. It is famous for its ancient university, which was one of the most important centers of learning in the world. However, there is no Ashoka pillar with a single Asiatic Lion Cap at Nalanda.
- Option D, Aseraj, is a village in the Indian state of Bihar. It is not a major historical site and there is no Ashoka pillar with a single Asiatic Lion Cap at Aseraj.