Which chinese pilgrim comes in search of Buddhist texts in c. 606-647 CE?

Xuan Zang

The correct answer is Option (2) → Xuan Zang

Note:  ‘Xuan Zang’ and ‘Huan Tsang’ refer to the same Chinese Buddhist pilgrim. However, modern textbooks and official NCERT terminology use the name ‘Xuan Zang’. Therefore, strictly speaking, both Options 2 and 4 indicate the same person. However, as per NCERT/NTA , the answer is Option 2.”