The capital of Vajji Mahajanapada was ______________.

Correct option is C

The correct answer is (c) Vaishali.
• The capital of Vajji Mahajanapada was Vaishali.
• Vaishali was an ancient city and served as the capital of the Vajjian Confederacy, one of the sixteen Mahajanapadas of ancient India.
Facts to remember:
• Vaishali is located in the present-day Indian state of Bihar.
• The Vajjian Confederacy was known for its republican form of governance, which was quite advanced for its time.
• Vaishali is also notable for being the birthplace of Lord Mahavira, the 24th Tirthankara of Jainism.
• The Buddha is said to have visited Vaishali several times and it was here that he announced his impending death.