Option 1: Ashoka played an important role in popularizing the Stupa cult. This statement is generally correct. Ashoka, the Mauryan emperor, played a significant role in the promotion and propagation of Buddhism, including the construction of stupas. He built many stupas throughout his empire and was a major patron of the Buddhist faith.

Option 2: They were repositories of relics of Buddha and other monks. This statement is also correct. Stupas were traditionally constructed to house the relics of the Buddha and other renowned monks. They were considered sacred sites and places of veneration for Buddhist devotees.

Option 3: They were located in rural areas. This statement is incorrect. Stupas were predominantly located in urban and semi-urban areas, especially in important trade centers and pilgrimage sites. They were often situated close to monasteries and other significant Buddhist establishments.

Option 4: They were located close to trade routes. This statement is correct. Stupas were often strategically placed near trade routes to cater to the religious needs of merchants and travelers. They served as rest stops and centers of religious activities along the busy trade routes.

In conclusion, the statement that is not correct is option 3, as stupas were mainly located in urban areas rather