Step 1: Identify the 23rd Tirthankara.
The twenty-third Tirthankara of Jainism is Lord Parshvanatha.
He is an important spiritual teacher in Jain tradition who lived in the 9th century BCE.
Step 2: Birthplace of Parshvanatha.
According to Jain scriptures, Lord Parshvanatha was born in Varanasi (Kashi).
His father’s name was Ashvasena (the king of Varanasi) and his mother’s name was Vama Devi.
Step 3: Option analysis.
- (A) Ayodhya: Birthplace of Lord Rishabhdev (1st Tirthankara), not the 23rd.
- (B) Varanasi: Correct. This is the birthplace of Parshvanatha.
- (C) Barabanki: No connection with Jain Tirthankaras.
- (D) Hastinapur: Associated with 17th, 18th, and 19th Tirthankaras, not the 23rd.
Step 4: Conclusion.
The correct answer is Varanasi, the birthplace of Lord Parshvanatha.