Detailed Solution:
The correct answer is “Amaravati”.
The features of a platform with ‘Aryak-Pillars’ are found in the Amaravati Stupa.
Amaravati, located in Andhra Pradesh, is renowned for its grand stupa and intricate sculptural details, including the Aryak Pillars, which are significant in Buddhist architecture.
The Amaravati Stupa dates back to the 2nd century BCE to the 3rd century CE, during the time of the Maurya and post-Maurya empires. It played a crucial role in the spread of Buddhism in the region.