Explanation:

- Option 1: Panipat

- Panipat, located in modern-day Haryana, does not have historical significance as a capital in the context of Magadha.

- It is more famous for the battles fought there in Indian history, particularly during the Mughal era.

- Option 2: Varanasi

- Varanasi, also known as Kashi, is an ancient city but was never a capital of Magadha.

- It has been a significant cultural and religious center.

- Option 3: Mathura

- Mathura is known for its historical and religious importance, particularly as the birthplace of Lord Krishna.

- However, it has no known association as a capital of Magadha.

- Option 4: Pataliputra

- Pataliputra, corresponding to modern-day Patna, became the capital of Magadha in the 4th century BCE.

- It gained prominence under several dynasties, including the Maurya and Gupta empires.

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