उत्तर : 3. "सबसे बड़ा बौद्ध स्तूप"
व्याख्या :

Sanchi is a religious place of religious and historical importance. Sanchi is the site of several stupas, which were built on a hilltop. This place is related to Buddhism but not directly to the life of Buddha. It is more related to Buddha than Ashoka.